If $2^3\times 2^5\times 2^7=2^k$, then $k=$  .

Important Questions on Exponents (Powers)

EASY

7th CBSE

IMPORTANT

Math Sight>Chapter 5 - Exponents (Powers)>Test Paper 2>Q 2

If ${\left(pq\right)}^4\times {\left(pq\right)}^5={\left(pq\right)}^k$, then $k=$_____.

EASY

7th CBSE

IMPORTANT

Math Sight>Chapter 5 - Exponents (Powers)>Test Paper 2>Q 3

If $({a^{-2})}^3=a^k$, then the value of $k$ is  _____.

EASY

7th CBSE

IMPORTANT

Math Sight>Chapter 5 - Exponents (Powers)>Test Paper 2>Q 4

Simplify: $\left({16}^0\times {13}^0+12^1\right)\times (2^3+2^0)$

EASY

7th CBSE

IMPORTANT

Math Sight>Chapter 5 - Exponents (Powers)>Test Paper 2>Q 5

Express in power notation: $\frac{-343}{ 512}$

EASY

7th CBSE

IMPORTANT

Math Sight>Chapter 5 - Exponents (Powers)>Test Paper 2>Q 6

If $\left(4^2\times 3^2\right)÷(3^2\times 2^5)=2^{-k}$, then find the value of $k$.

EASY

7th CBSE

IMPORTANT

Math Sight>Chapter 5 - Exponents (Powers)>Test Paper 2>Q 7

Solve: $\left[\right({5^{-2})}^5\times 5^{15}]÷5^{-28}$

EASY

7th CBSE

IMPORTANT

Math Sight>Chapter 5 - Exponents (Powers)>Test Paper 2>Q 8

What number will divide $3^{-2}$to get $9^2$?

EASY

7th CBSE

IMPORTANT

Math Sight>Chapter 5 - Exponents (Powers)>Test Paper 2>Q 9

Find the value of $a$ if ${\left(\frac{3}{5}\right)}^{3a}\times {\left(\frac{3}{5}\right)}^{4a+3}={\left(\frac{3}{5}\right)}^{52}$