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

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

 

[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

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

[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

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Find x, if

\[\left( \frac{3}{2} \right)^{- 3} \times \left( \frac{3}{2} \right)^5 = \left( \frac{3}{2} \right)^{2x + 1}\]
[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

Find x, if

\[\left( \frac{2}{5} \right)^{- 3} \times \left( \frac{2}{5} \right)^{15} = \left( \frac{2}{5} \right)^{2 + 3x}\]
[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

Find x, if

\[\left( \frac{5}{4} \right)^{- x} \div \left( \frac{5}{4} \right)^{- 4} = \left( \frac{5}{4} \right)^5\]
[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

Find x, if

\[\left( \frac{8}{3} \right)^{2x + 1} \times \left( \frac{8}{3} \right)^5 = \left( \frac{8}{3} \right)^{x + 2}\]
[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

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

[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

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

[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

Find the value of x for which 52x ÷ 5−3 = 55.

[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

Square of \[\left( \frac{- 2}{3} \right)\] is

 
[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

Cube of \[\frac{- 1}{2}\] is

 
[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

Which of the following is not equal to \[\left( \frac{- 3}{5} \right)^4 ?\]

[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

Which  of the following is not reciprocal of \[\left( \frac{2}{3} \right)^4 ?\]

[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined

Which of the following numbers is not equal to \[\frac{- 8}{27}?\]
(a) \[\left( \frac{2}{3} \right)^{- 3}\]

(b) \[- \left( \frac{2}{3} \right)^3\]

(c) \[\left( - \frac{2}{3} \right)^3\]

(d) \[\left( \frac{- 2}{3} \right) \times \left( \frac{- 2}{3} \right) \times \left( \frac{- 2}{3} \right)\]

[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined
\[\left( \frac{2}{3} \right)^{- 5}\] is equal to
[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined
\[\left( \frac{- 1}{2} \right)^5 \times \left( \frac{- 1}{2} \right)^3\] is equal to
[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined
\[\left( \frac{- 1}{5} \right)^3 \div \left( \frac{- 1}{5} \right)^8\]  is equal to
[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined
\[\left( \frac{- 2}{5} \right)^7 \div \left( \frac{- 2}{5} \right)^5\] is equal to
[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined
\[\left\{ \left( \frac{1}{3} \right)^2 \right\}^4\] is equal to
[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined
\[\left( \frac{1}{5} \right)^0\]  is equal to
[10] Exponents and Powers
Chapter: [10] Exponents and Powers
Concept: undefined >> undefined
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