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This mock test of Test: Exponents And Powers - 2 for Class 7 helps you for every Class 7 entrance exam.
This contains 20 Multiple Choice Questions for Class 7 Test: Exponents And Powers - 2 (mcq) to study with solutions a complete question bank.
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QUESTION: 1

The value of (−1)^{250} is

Solution:

QUESTION: 2

The value of (−1)^{75} is

Solution:

QUESTION: 3

The value of (−1)^{450} is

Solution:

QUESTION: 4

The value of (−1)^{91} is

Solution:

QUESTION: 5

The value of (−1)^{310} is

Solution:

Since the power is an even integer , the minus sign will get cancelled. So we will receive 1 only.

QUESTION: 6

The value of 2^{8} is

Solution:

QUESTION: 7

Simplify and write in exponential form of 2^{2}x 2^{5}

Solution:

QUESTION: 8

Simplify and write in exponential form of (− 4)^{100}× (−4)^{20}

Solution:

When bases are same, powers are added. So we will add powers

(-4)^{100}(-4)^{20}=(-4)^{120}

QUESTION: 9

Simplify and write in exponential form of 5^{2}× 5^{7}× 5^{12}

Solution:

QUESTION: 10

The value of 2^{2} is

Solution:

QUESTION: 11

The exponent in the expression 3^{7} is _______

Solution:

3 raised to the power of 7 here three is called base and other one is exponent.

QUESTION: 12

The value of 3^{0} is ________ .

Solution:

QUESTION: 13

The value of 5^{0} is ________ .

Solution:

QUESTION: 14

The value of 7^{0} is ________ .

Solution:

QUESTION: 15

The value of 11^{0} is ________ .

Solution:

QUESTION: 16

Multiplicative inverse of 1/5 is

Solution:

QUESTION: 17

Multiplicative inverse of 1/7 is

Solution:

QUESTION: 18

Multiplicative inverse of 1/3 is

Solution:

QUESTION: 19

Multiplicative inverse of 9 is

Solution:

QUESTION: 20

Multiplicative inverse of 21 is

Solution:

Multiplicative inverse means is a number which when multiplied by x yields the multiplicative identity, 1. A number multiplied by 21 wich give 1 is the reciprocal of 21 which is 1/21

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