Advertisements
Advertisements
प्रश्न
\[\left( \frac{2}{3} \right)^{- 5} \times \left( \frac{5}{7} \right)^{- 5}\] is equal to
पर्याय
- \[\left( \frac{2}{3} \times \frac{5}{7} \right)^{- 10}\]
- \[\left( \frac{2}{3} \times \frac{5}{7} \right)^{- 5}\]
- \[\left( \frac{2}{3} \times \frac{5}{7} \right)^{25}\]
- \[\left( \frac{2}{3} \times \frac{5}{7} \right)^{- 25}\]
MCQ
बेरीज
उत्तर
\[\left( \frac{2}{3} \times \frac{5}{7} \right)^{- 5}\]
We have:
\[\left( \frac{2}{3} \right)^{- 5} \times \left( \frac{5}{7} \right)^{- 5}\] `=(2/3xx5/7)^(-5)` → ((a x b)n = an x bn)
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Evaluate.
`(5/8)^(-7) xx (8/5)^(-4)`
Simplify.
`(25 xx t^(-4))/(5^(-3) xx10xxt^(-8)) (t != 0)`
Express the following as a rational number of the form \[\frac{p}{q},\] where p and q are integers and q ≠ 0. (−4)−2
Find the value of the following:
3−1 + 4−1
Simplify:
\[\left( 3^2 + 2^2 \right) \times \left( \frac{1}{2} \right)^3\]
Evaluate:
5−2
Square of \[\left( \frac{- 2}{3} \right)\] is
Expand the following numbers using exponents.
1025.63
Express 16–2 as a power with the base 2.
Predicting the ones digit, copy and complete this table and answer the questions that follow.
| Powers Table | ||||||||||
| x | 1x | 2x | 3x | 4x | 5x | 6x | 7x | 8x | 9x | 10x |
| 1 | 1 | 2 | ||||||||
| 2 | 1 | 4 | ||||||||
| 3 | 1 | 8 | ||||||||
| 4 | 1 | 16 | ||||||||
| 5 | 1 | 32 | ||||||||
| 6 | 1 | 64 | ||||||||
| 7 | 1 | 128 | ||||||||
| 8 | 1 | 256 | ||||||||
| Ones Digits of the Powers |
1 | 2, 4, 8, 6 | ||||||||
- Describe patterns you see in the ones digits of the powers.
- Predict the ones digit in the following:
- 412
- 920
- 317
- 5100
- 10500
- Predict the ones digit in the following:
- 3110
- 1210
- 1721
- 2910
