Question

Q1. Find the multiplicative inverse of (

5

3

)

−2

.

a) 9

25

b) 25

9

c) 5

3

d) 1

Q2. Standard form of 0.000000789 is

a) 78.9 × 10−8 b) 789 × 10−9

c) 7.89 × 10−7 d) none of these

Q3. Find the value of (

5

4

)

−3

.

a) 125

64

b) 64

125

c) 25

16

d) 16

25

Q4. Square of an even number is always

a) even b) odd

c) even or odd d) none of these

Q5. The smallest number by which 162 should be multiplied to make it a perfect square is

a) 4 b) 3

c) 2 d) 1​

Answer 1

Answer:

Step-by-step explanation:

2nd answer is 3 rd one

4th answer is even