Exponents And Powers : Maths MCQ Practice Questions & Answers (English) - Page 2

MathsEasyExponents And Powers

21.

Value of ( 30 + 20 ) × 50 is

A

1

B

25

C

2

MathsEasyExponents And Powers

22.

16 is the multiplicative inverse of

A

2-4

B

28

C

82

D

24

MathsEasyExponents And Powers

23.

(1/125) is the multiplicative inverse of

A

5-3

B

1/5-3

C

-125

D

53

MathsEasyExponents And Powers

24.

Which one of the following is the value of 115

A

15

B

1

C

None of these

MathsEasyExponents And Powers

25.

The standard form of 4050000 is given by

A

$4.05 \times 10^{6}$

B

$40.5 \times 10^{9}$

C

$405 \times 10^{6}$

D

$4.05 \times 10^{-6}$

MathsEasyExponents And Powers

26.

7 × 10-5 m is the standard form of which of the following

A

0.0007 m

B

0.000007 m

C

0.0000007 m

D

0.00007 m

MathsEasyExponents And Powers

27.

The approximate distance of moon from the earth is 384,467,000 m and in exponential form. This distance can be written as

A

3.84, $467 \times 10^{8}$ m

B

384,467 × 10-8 m

C

384,467 × 10-9 m

D

3.844,67 × 10-13 m

MathsEasyExponents And Powers

28.

1 micron is equals to

A

1/10000 m

B

$10^{6}$ m

C

$10^{-6}$ m

D

$10^{-5}$ m

MathsEasyExponents And Powers

29.

Usual form of the expression 3 X 10-5 is given by

A

3.0E-5

B

3.0E-6

C

30 X 10-4

D

0.03 X 10-3

MathsEasyExponents And Powers

30.

In standard form 21600000 is written as

A

$2.16 \times 10^{7}$

B

$216 \times 10^{7}$

C

$2.16 \times 10^{5}$

D

$216 \times 10^{4}$

MathsEasyExponents And Powers

31.

The value of (2/3)-2 is

A

(4/9)

B

(-2/9)

C

(9/4)

MathsEasyExponents And Powers

32.

In simplified form ( 3-1 + 4-1 + 5-1 )0 is equals to

A

12

B

-3

C

12-1

D

1

MathsEasyExponents And Powers

33.

In exponential form 149,600,000,000 m is given by

A

$1.496 \times 10^{11}$ m

B

$1.496 \times 10^{8}$ m

C

$14.96 \times 10^{8}$ m

D

$14.96 \times 10^{11}$ m

MathsEasyExponents And Powers

34.

The value of (1/3)-2 is equal to

A

9

B

1

C

-6

D

(1/3)

MathsEasyExponents And Powers

35.

The exponential form of (1/8) × (3)-3 is given by which of the following expression:

A

6-3

B

23

C

3-6

D

5-3

MathsEasyExponents And Powers

36.

Fill in the blank am × an = a........ where m and n are natural numbers:

A

mn

B

m + n

C

m - n

D

m/n

MathsEasyExponents And Powers

37.

Multiplicative inverse of 7-2 is

A

49

B

5

C

7

D

-14

MathsEasyExponents And Powers

38.

The value of 30 is

A

3

B

1

C

None of these

MathsEasyExponents And Powers

39.

The Base in the expression 1024 is

A

1

B

10

C

24

MathsEasyExponents And Powers

40.

The value of 25 is

A

3

B

10

C

32

D

7

Exponents And Powers in Maths : Practice MCQ Questions & Answers with Explanations

Exponents And Powers in Maths : Practice MCQ Questions & Answers with Explanations