Secondary School (English Medium) (5 to 8) इयत्ता ८ - CBSE Question Bank Solutions

Simplify:

Simplify:

Simplify:

The square of which of the following number would be an odd number? 

 731 

The square of which of the following number would be an odd number? 

3456 

The square of which of the following number would be an odd number? 

5559 

The square of which of the following number would be an odd number? 

 42008 

By what number should \[\left( \frac{1}{2} \right)^{- 1}\] be multiplied so that the product may be equal to \[\left( \frac{- 4}{7} \right)^{- 1} ?\]

By what number should \[\left( \frac{5}{3} \right)^{- 2}\] be multiplied so that the product may be \[\left( \frac{7}{3} \right)^{- 1} ?\]

Find x, if \[\left( \frac{1}{4} \right)^{- 4} \times \left( \frac{1}{4} \right)^{- 8} = \left( \frac{1}{4} \right)^{- 4x}\]

Find x, if
\[\left( \frac{- 1}{2} \right)^{- 19} \times \left( \frac{- 1}{2} \right)^8 = \left( \frac{- 1}{2} \right)^{- 2x + 1}\]

Find x, if

Find x, if

Find x, if

Find x, if

if \[x = \left( \frac{3}{2} \right)^2 \times \left( \frac{2}{3} \right)^{- 4}\], find the value of x⁻².

If \[x = \left( \frac{4}{5} \right)^{- 2} \div \left( \frac{1}{4} \right)^2\], find the value of x⁻¹.

Find the value of x for which 5^2x ÷ 5⁻³ = 5⁵.