Logical Reasoning Test

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Logical Reasoning Test - 13

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Weekly Quiz Competition

Question 1
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Which number can substitute the question mark?

A
3250

B
3057

C
2224

D
1183

Solution

1240 = 31x (27+13)

1066= 41x (9+17)

Using the same rule,

the required no. = 13x (29+62)

= 13x91 = 1183

Hence, the correct option is (d).
Question 2
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In the National Park, the white tigers hardly moved around, they always looked for opportunities to lie around.
From which of the following can the above statement be most properly inferred?

A
White tigers are usually known to be lazy.

B
The National Park makes the tigers active.

C
Only white tigers are known to hunt their food aggressively.

D
If an active tiger is seen at the National Park, it must not be the white tiger.

Solution

A is the only option from which we can infer that white tigers like to lie around—because they are known to be lazy.
Hence, the correct option is (a).
Question 3
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Directions For Questions

Directions: Answer the questions using the information given below.

In 'Famous Casino' situated in Monte Carlo, three friends A, B and C are playing with a fair die, which has the numbers 1, 2, 3, 4, 5 and 6 marked on its six faces. Turn by turn, each one of them rolls the die once and notes down the outcome obtained. At the end of the first three rolls, a 'round' gets completed. The players roll the die to complete three more such rounds. For each round, the "round score" is defined as the sum of the three outcomes obtained in that round. The following chart represents the 'round scores' of the rounds expressed as a percentage of the maximum possible round score.

...view full instructions

Which of the following outcomes could never have been obtained by A in any of the four rounds?

A
1

B
2

C
3

D
5

Solution

Total score in Round 1 = $\frac{33.33}{100}$ x 18 = 6

Total score in Round 2 = $\frac{27.77}{100}$ x 18 = 5

Total score in Round 3 = $\frac{22.22}{100}$ x 18 = 4

Total score in Round 4 = $\frac{16.67}{100}$ x 18 = 3

Given the above calculation, there is no way A (or any other person) could have scored a 5 on any throw because we won't be able to reach a total of 6 (the maximum score for the four rounds) among three people then. If one person gets 5, then the lowest the other two people could get is 1 and 1, which would still add up to 7.

Hence, the correct option is (d).
Question 4
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Directions For Questions

Directions: Answer the questions using the information given below.

In 'Famous Casino' situated in Monte Carlo, three friends A, B and C are playing with a fair die, which has the numbers 1, 2, 3, 4, 5 and 6 marked on its six faces. Turn by turn, each one of them rolls the die once and notes down the outcome obtained. At the end of the first three rolls, a 'round' gets completed. The players roll the die to complete three more such rounds. For each round, the "round score" is defined as the sum of the three outcomes obtained in that round. The following chart represents the 'round scores' of the rounds expressed as a percentage of the maximum possible round score.

...view full instructions

In the third round, what percentage of the round score was contributed by the outcome of B?

A
25%

B
33%

C
50%

D
Cannot be determined

Solution

We do not know the score of B in the third round, so we cannot calculate the percentage of the round score contributed by him.

Hence, the correct option is (d).
Question 5
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Directions For Questions

Directions: Answer the questions using the information given below.

In 'Famous Casino' situated in Monte Carlo, three friends A, B and C are playing with a fair die, which has the numbers 1, 2, 3, 4, 5 and 6 marked on its six faces. Turn by turn, each one of them rolls the die once and notes down the outcome obtained. At the end of the first three rolls, a 'round' gets completed. The players roll the die to complete three more such rounds. For each round, the "round score" is defined as the sum of the three outcomes obtained in that round. The following chart represents the 'round scores' of the rounds expressed as a percentage of the maximum possible round score.

...view full instructions

It is given that a particular pair of players obtained the same outcome in each of the four rounds. What was the outcome obtained by the other remaining player in the second round?

A
1

B
2

C
3

D
Cannot be determined

Solution

Total score in Round 1 = $\frac{33.33}{100}$ x 18 = 6

Total score in Round 2 = $\frac{27.77}{100}$ x 18 = 5

Total score in Round 3 = $\frac{22.22}{100}$ x 18 = 4

Total score in Round 4 = $\frac{16.67}{100}$ x 18 = 3

Round 4has the lowest Round score. Each player in this Round must have scored 1. As per the questions, two players got this score (a score of 1) in the remaining three rounds as well. Thus, these two players contributed 2 points to a total score of 5 obtained in Round 2.

Therefore, the third player must have got a score of 5-2 = 3.

Hence, the correct option is (c).
Question 6
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Directions For Questions

Directions: Answer the questions using the information given below.

In 'Famous Casino' situated in Monte Carlo, three friends A, B and C are playing with a fair die, which has the numbers 1, 2, 3, 4, 5 and 6 marked on its six faces. Turn by turn, each one of them rolls the die once and notes down the outcome obtained. At the end of the first three rolls, a 'round' gets completed. The players roll the die to complete three more such rounds. For each round, the "round score" is defined as the sum of the three outcomes obtained in that round. The following chart represents the 'round scores' of the rounds expressed as a percentage of the maximum possible round score.

...view full instructions

In the first round, C was the first player to roll the die. In the subsequent rounds, the die was rolled for the first time by the player who obtained the largest number as the outcome in the previous round. In the subsequent rounds, if C never got the honour of rolling the die for the first time, which of the following could be the sum of the four outcomes obtained by C?

A
5

B
6

C
7

D
8

Solution

Total score in Round 1 = $\frac{33.33}{100}$ x 18 = 6

Total score in Round 2 = $\frac{27.77}{100}$ x 18 = 5

Total score in Round 3 = $\frac{22.22}{100}$ x 18 = 4

Total score in Round 4 = $\frac{16.67}{100}$ x 18 = 3

In the first Round, the highest score by a person could be a 3 or 4, so C must have scored a 1 or 2.

In the second Round, the highest score by a person could be a 2 or 3. So C must have scored a 1.

In the third Round, the highest score by a person has to be 2, so C must have scored a 1

In the fourth round, each player scored a 1.

Thus C's total possible score can be a 4 or a 5, making A the correct answer.

Hence, the correct option is (a).
Question 7
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What is the value of the letter M in the given problem?

A
1

B
2

C
4

D
5

Solution

There are only 3 values where N x N gives N in unit place :

1) If N is 1, but it is not possible as then we must have got M 2 N as product .

2) If N is 5, then we get 5 in unit place and 2 as carry over for 5x5=25.

But, then we must have got 2 instead of 5 in ten's digit at product .

3) N=6, then NxN= 36, gives 3 as carry over and we have 6x2+3(carry over) = 15.

So, we have 5 at ten's digit and 1 is carry over.

Now, we have 6xM+1 = 25.

It is possible for M=4

Hence, the correct option is (c).
Question 8
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Directions: Given alongside are a few facts. Based on these facts, select from among the given statements, the statement that can be best concluded.
Facts:
Fact 1: Mr. Sethi has eight kids.
Fact 2: Two of them are studying computers.
Fact 3: Three of them are studying science.
Fact 4: Three of them are studying art.
Fact 5: Those who are studying science are inclined towards mechanics.
Statements:
I. All of Mr. Sethi's eight kids are studying.
II. Only three kids show an inclination towards mechanics.
III. Mr. Sethi's kids study either science or computers or art.
IV. Those who are studying art might also have an inclination towards mechanics.

A
Only (I) can be concluded.

B
Only (IV) can be concluded. None can be concluded.

C
Both (II) and (III) can be concluded.

D
All can be concluded

Solution

We can't conclude I as some children might be studying more than 1 topic and some children might not be studying anything.
We can't conclude II as, while we know that 3 children who are studying science must be inclined towards mechanics, we don't know whether the other children are inclined towards mechanics.
We can't conclude III as it is possible that in the given data 1 or more may be studying 2 or 3 topics simultaneously. So, there might be some child or some children who are also studying some other topic or topics.
We can conclude IV as those who are studying arts may also have an inclination towards mechanics.
Hence, the correct option is (b).
Question 9
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Directions: In the given question, a statement is followed by three arguments numbered I, II, and III. You have to decide which of the arguments is strong and which is weak.
Statement:Should the Western way of life be adopted here in India?
Arguments:(I) No. The Western culture is quite different to the Indian culture, hence should not be blindly followed.
(II) Yes. We should be open to accepting the good from all cultures, and have a positive mindset.
(III) No. The West has already spoilt our people a lot and it’s time we turned our backs on them.

A
Only (I) is strong.

B
Only (II) is strong.

C
Only (III) is strong.

D
Both (I) and (II) are strong.

Solution

Argument I is weak because it does not give any reason in support of its thesis. Nobody is saying that the Indian and Western cultures are the same, but just because they are different is no reason to not follow the Western culture.
Argument II is strong as it gives a logical reason for accepting the Western culture.
Argument III is weak because it is negative in approach and indulges in a blame game without giving any facts to support these claims.
Hence, the correct option is (b).
Question 10
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The Black Spider Monkey of Brazil has become endangered because of human activities such as, deforestation and logging, which causes destruction of the monkey's natural habitat.
Which of the following if true would weaken the above argument?

A
Costa Rican government is constantly trying to preserve the natural habitat of the squirrel monkeys in order to save them from extinction.

B
A certain allele (alternate gene) discovered in a black spider monkey pointed to micro-evolutionary extinction setting in.

C
Habitat loss in the Congo basin has seen no remarkable change in the count of Dryas monkeys in this region.

D
Habitat loss in the Congo basin has seen a decrease in the count of Dryas monkeys in this region.

Solution

To weaken the argument, we need to give another reason (apart from habitat loss) why the Black Spider Monkey may have become endangered. B provides this alternative reason and should be the correct answer.
Hence, the correct option is (b).

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Logical Reasoning Test - 13

Result

Logical Reasoning Test - 13

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SHARING IS CARING

Question 1

3250

3057

2224

1183

Solution

Question 2

White tigers are usually known to be lazy.

The National Park makes the tigers active.

Only white tigers are known to hunt their food aggressively.

If an active tiger is seen at the National Park, it must not be the white tiger.

Solution

Question 3

1

2

3

5

Solution

Question 4

25%

33%

50%

Cannot be determined

Solution

Question 5

1

2

3

Cannot be determined

Solution

Question 6

5

6

7

8

Solution

Question 7

1

2

4

5

Solution

Question 8

Only (I) can be concluded.

Only (IV) can be concluded. None can be concluded.

Both (II) and (III) can be concluded.

All can be concluded

Solution

Question 9

Only (I) is strong.

Only (II) is strong.

Only (III) is strong.

Both (I) and (II) are strong.

Solution

Question 10

Costa Rican government is constantly trying to preserve the natural habitat of the squirrel monkeys in order to save them from extinction.

A certain allele (alternate gene) discovered in a black spider monkey pointed to micro-evolutionary extinction setting in.

Habitat loss in the Congo basin has seen no remarkable change in the count of Dryas monkeys in this region.

Habitat loss in the Congo basin has seen a decrease in the count of Dryas monkeys in this region.

Solution

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