Advertisements
Advertisements
प्रश्न
By what number should 5−1 be multiplied so that the product may be equal to (−7)−1?
Advertisements
उत्तर
Using the property a−1 = 1/a for every natural number a, we have 5−1 = 1/5 and (−7)−1 = −1/7. We have to find a number x such that \[\frac{1}{5} \times x = \frac{- 1}{7}\] Multiplying both sides by 5, we get:
Hence, the required number is −5/7.
APPEARS IN
संबंधित प्रश्न
Find the value of the following:
Simplify:
Express the following as a rational number in the form \[\frac{p}{q}:\]
Simplify:
\[\left\{ 3^{- 1} \times 4^{- 1} \right\}^{- 1} \times 5^{- 1}\]
Simplify:
\[\left( 4^{- 1} - 5^{- 1} \right) \div 3^{- 1}\]
Express the following rational numbers with a negative exponent:
Express the following rational numbers with a positive exponent:
Simplify:
By what number should 5−1 be multiplied so that the product may be equal to (−7)−1?
Simplify and express the result in power notation with positive exponent.
(3−7 ÷ 3−10) × 3−5
