Integers Test

Result

Integers Test - 15

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Weekly Quiz Competition

Question 1
1 / -0

Directions For Questions

What value should come in place of question mark (?) in the questions given below ?

...view full instructions

2850 $$\div$$ ? = 75

A
31

B
34

C
38

D
39

Solution

2850 $$\div$$ ? = 75
$$\Rightarrow$$ ? = $$\displaystyle \frac{2850}{75}$$ = 38.
Question 2
1 / -0

Evaluate $$\displaystyle\ \frac{(-8)\times8\times(-8)\times(-8)}{(-4)\times(-4)\times(-4)\times(-4)}$$

A
-1

B
-6

C
-16

D
16

Solution

Given, $$

\dfrac { (-8) \times 8 \times (-8) \times (-8) }{ (-4)\times (-4) \times (-4) \times (-4) } $$

As there are $$ 3 $$ negative numbers in the numerator and $$ 4 $$ in the denominator, the answer will be negative.
Canceling out the common factors and simplifying we get

$$ \dfrac { (-8) \times 8 \times (-8) \times (-8) }{ (-4)\times (-4) \times (-4) \times (-4) } =2\times -2\times2\times2 = - 16 $$
Question 3
1 / -0

Compare: $$+15\;\square-27$$

A
$$<$$

B
$$=$$

C
$$>$$

D
$$\neq$$

Solution

Positive numbers are always greater than negative numbers.
Hence, $$+15\;>\;-27$$.
Question 4
1 / -0

What value should come in place of question mark (?) in the questions given below ?
29 + 729 = ?

A
758

B
763

C
741

D
751

Solution

29 + 729 = 758
Question 5
1 / -0

Evaluate $$\displaystyle\ \frac {(-16)\times (-8)\times (-81)}{(-18)\times 32}$$

A
$$-18$$

B
$$18$$

C
$$16$$

D
$$-16$$

Solution

Given, $$

\dfrac { (-16)\times (-8) \times (-81) }{ (-18)\times 32 } $$

As there are $$ 3 $$ negative numbers in the numerator and $$ 1 $$ in the denominator, the answer will be positive.

Canceling out the common factors and simplifying we get

$$ \dfrac { (-16)\times (-8) \times (-81) }{ (-18)\times 32 }=\dfrac{4 \times 81}{9 \times2} = 18 $$
Question 6
1 / -0

Compare: $$+42\;\square+23$$

A
$$<$$

B
$$>$$

C
$$=$$

D
$$\neq$$

Solution

While comparing positive numbers, greater is greater, smaller is smaller.
Hence, $$+42 > +23$$.
Question 7
1 / -0

Multiplication of a negative integer for even times gives a _____result

A
negative

B
$$0$$

C
positive

D
none

Solution

Multiplication 2 times: $$(-2)\times(-2) = 4$$

Multiplication 4 times: $$(-3)\times(-3)\times(-3) \times (-3) = 9 \times 9 = 81$$

Multiplication 6 times: $$(-1)\times(-1)\times(-1) \times (-1) \times (-1) \times (-1) = 1 \times 1 \times 1 = 1$$

Hence, when a negative integer is multiplied even number of times, the result is a positive integer.
Question 8
1 / -0

Compare: $$-28\;\square -32$$

A
$$<$$

B
$$=$$

C
$$\neq$$

D
$$>$$

Solution

While comparing negative numbers, smaller is greater, greater is smaller.
Therefore, $$-28\;>\;-32$$.
Hence, option D is correct.
Question 9
1 / -0

Directions For Questions

What value should come in place of question mark (?) in the questions given below ?

...view full instructions

43 $$\times$$ 5 = ?

A
215

B
220

C
205

D
251

Solution

43 $$\times$$ 5 = 215
Question 10
1 / -0

If $$27\times3 =243$$ and $$5\times 4=80$$
Then the value of $$3\times 7$$ is ___.

A
$$84$$

B
$$147$$

C
$$63$$

D
$$23$$

Solution

We can observe that,
$$27\times3 =81 $$ and $$81\times 3 = 243 $$

Similarly,
$$5\times 4 =20 $$ and $$20 \times 4 =80$$

Hence,
$$3\times 7 = 3 \times 7 \times 7 =147 $$

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Re-Attempt Weekly Quiz Competition

Integers Test - 15

Result

Integers Test - 15

Score

-

Rank

-

SHARING IS CARING

Question 1

31

34

38

39

Solution

Question 2

-1

-6

-16

16

Solution

Question 3

$$<$$

$$=$$

$$>$$

$$\neq$$

Solution

Question 4

758

763

741

751

Solution

Question 5

$$-18$$

$$18$$

$$16$$

$$-16$$

Solution

Question 6

$$<$$

$$>$$

$$=$$

$$\neq$$

Solution

Question 7

negative

$$0$$

positive

none

Solution

Question 8

$$<$$

$$=$$

$$\neq$$

$$>$$

Solution

Question 9

215

220

205

251

Solution

Question 10

$$84$$

$$147$$

$$63$$

$$23$$

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

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