Mathematical and Logical Reasoning Test 86

Result

Mathematical and Logical Reasoning Test 86

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Weekly Quiz Competition

Question 1
1 / -0

If in a certain code language, ABCD is written as ZYXW. Then how is the word DANCE written in that code ?

A
WZMXV

B
MXZWV

C
VMZXM

D
ZMWXV

E
MZWXV

Solution

The role of coding is $$\displaystyle T_{+n}$$ is coded as $$\displaystyle T_{-n}$$
A is the first letter from the start which is coded as first letter from the end i.e. Z and so on.
$$\displaystyle \therefore $$ DANCE is coded as WZMXV The answer is (a)
Question 2
1 / -0

In a certain code SIKKIM is written as THLJJL. How is TRAINING written in that code ?

A
SQBHOHOH

B
UQBHOHOF

C
UQBJOHHO

D
UQBJOHOH

Solution

Here, the letters in the given word SIKKIM are moved alternately one step forward and one step backward to obtain the corresponding letters of the code THLJJL.
Similarly, TRAINING is written as UQBHOHOF.
Hence, option (B) is the correct answer.
Question 3
1 / -0

In a certain code FORGE is written as FPTJI .How is CULPRIT written in that code ?

A
CSJNPGR

B
CVMQSTU

C
CVNSVNZ

D
CXOSULW

Solution

Given, FORGE is written as FPTJI.
Here, first letter of the word 'FORGE' remains the same whereas other letters move one, two, three and four steps forward to obtain the corresponding letters of the code FPTJI.
Similarly, CULPRIT is written as CVNSVNZ.
Hence, option (C) is the correct answer.
Question 4
1 / -0

In a certain code MENTION is written as LNEITNO. How is PATTERN written in that code ?

A
APTTREM

B
PTAETNR

C
OTAETNR

D
OTAETRN

Solution

Clearly, to obtain the code, the first letter of the word 'MENTION' is moved one step backward and the remaining letters are moved in reverse order taking two at a time to get the code 'LNEITNO'.
Similarly, PATTERN is coded as 'OTAETNR'.
Hence, option (C) is the correct answer.
Question 5
1 / -0

Choose the one which is different from the others

A
$$15$$

B
$$63$$

C
$$143$$

D
$$195$$

E
$$257$$

Solution

Each of the numbers, except 257, is one less than the square of a certain number.
Question 6
1 / -0

Choose the one which is different from the others

A
$$120$$

B
$$168$$

C
$$290$$

D
$$380$$

E
$$728$$

Solution

Each of the numbers(except $$380$$), is either one less or one more than the square of a certain number. i.e.
(A) $$120=121-1=11^2-1$$
(B) $$168=169-1=13^2-1$$
(C) $$290=289+1=17^2+1$$
(E) $$728=729-1=27^2-1$$
But D is neither one less nor one more than the square of some number.
Hence, D is different from others.
Question 7
1 / -0

Choose the one which is different from the other

A
246

B
356

C
527

D
639

Solution

In other numbers, the number in the unit place is sum of the other two digits.
Question 8
1 / -0

(i) M is the brother of N;
(ii) B is the brother of N; and
(iii) M is the brother of D;
Which of the following statements is definitely true ?

A
N is the brother of B

B
N is the brother of D

C
M is the brother of B

D
D is the brother of M

E
None of these

Solution

From the given, it can be concluded that
M is the brother of N and D.
B is the brother of N.
But we do not know whether N is their brother or sister.
So, surely we can only conclude that M is the brother of B.
option C.
Question 9
1 / -0

Choose the one which is different from the others

A
$$126$$

B
$$217$$

C
$$345$$

D
$$513$$

E
$$730$$

Solution

Each of the number(except 345), is one more than the cube of a certain number.
(A) $$126=125-1=5^3-1$$
(B) $$217=216-1=6^3-1$$
(D) $$513=512-1=8^3-1$$
(E) $$730=729-1=9^3-1$$
And (C) $$345=343+2=7^3+2$$
Hence C is different from others.
Question 10
1 / -0

Choose the one which is different from the other

A
7

B
15

C
31

D
57

Solution

Except 57, other number can be expressed as $$2^n- 1$$.
e.g. $$7=2^3-1; 15=2^4-1; 31=2^5-1$$.

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Re-Attempt Weekly Quiz Competition

Mathematical and Logical Reasoning Test 86

Result

Mathematical and Logical Reasoning Test 86

Score

-

Rank

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SHARING IS CARING

Question 1

WZMXV

MXZWV

VMZXM

ZMWXV

MZWXV

Solution

Question 2

SQBHOHOH

UQBHOHOF

UQBJOHHO

UQBJOHOH

Solution

Question 3

CSJNPGR

CVMQSTU

CVNSVNZ

CXOSULW

Solution

Question 4

APTTREM

PTAETNR

OTAETNR

OTAETRN

Solution

Question 5

$$15$$

$$63$$

$$143$$

$$195$$

$$257$$

Solution

Question 6

$$120$$

$$168$$

$$290$$

$$380$$

$$728$$

Solution

Question 7

246

356

527

639

Solution

Question 8

N is the brother of B

N is the brother of D

M is the brother of B

D is the brother of M

None of these

Solution

Question 9

$$126$$

$$217$$

$$345$$

$$513$$

$$730$$

Solution

Question 10

7

15

31

57

Solution

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