Question

By what number should we multiply 5^-1 to get 2^1

Answer 1

Answer:

$\huge{\boxed{\rm{\red{Answer=10}}}}$

Step-by-step explanation:

Given:-

the number 5^-1

To find:-

By what number should we multiply 5^-1 to get 2^1.

Solution:-

Let the required number be X

X should be multiplied by 5^-1 to get 2^1

=>5^-1×X=2^1

=>5^-1×X=2

we know that a^-n=1/a^n

=>X/5=2

=>X=2×5

=>X=10

Answer:-

The required number=10

Check:-

10×5^-1

=>10×(1/5)

=>10/5

=>2

Verified