To get the product 1- we should multiply 8-21 by

Let x be the number 8/21 to be multiplied.So, 8/21× x=10ex0exx=21/8Hence, the answer is 21/8 ...

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Standard VIII

Mathematics

Applications (Word Problem)

To get the pr...

Question

To get the product $1$ , we should multiply $\frac{8}{21}$ by

$\frac{8}{21}$

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$- \frac{8}{21}$

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$\frac{21}{8}$

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$- \frac{21}{8}$

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Solution

The correct option is C
$\frac{21}{8}$

Let $x$ be the number $\frac{8}{21}$ to be multiplied.
So,
$\frac{8}{21} \times x = 1 x = \frac{21}{8}$
Hence, the answer is $\frac{21}{8}$

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Similar questions

Question 12
To get the product 1, we should multiply $\frac{8}{21}$ by

(a) $\frac{8}{21}$

(b) $\frac{- 8}{21}$

(c) $\frac{21}{8}$

(d) $\frac{- 21}{8}$

By what number should we multiply 7⁶ to get 7²?

Q. By what number should we multiply (−6)⁻¹ to obtain a product equal to 9⁻¹?

By what natural number should we multiply (0.25)⁶ to get (0.25)⁴?

Q. By what rational number should we multiply

\frac{- 15}{56}

to get

\frac{- 5}{7}

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To get the product 1, we should multiply 821 by

The correct option is C 218Let x be the number 821 to be multiplied.So, 821×x=1x=218Hence, the answer is 218

To get the product $1$ , we should multiply $\frac{8}{21}$ by

The correct option is C
$\frac{21}{8}$

Let $x$ be the number $\frac{8}{21}$ to be multiplied.
So,
$\frac{8}{21} \times x = 1 x = \frac{21}{8}$
Hence, the answer is $\frac{21}{8}$