Practice Test Discussion

${(19)}^{29} \times {(19)}^{-27} =?$

[Union Bank of India (PO), 2008]

361

6859

None of these

Explanation

$\begin{array}{l} Here, \\ {= (19)}^{29} \times {(19)}^{- 27} \\ [∵ a^{m} \times a^{n} = a^{m + n}] \\ = {(19)}^{29 - 27} = {(19)}^{2} = 361 \end{array}$

Hence, Option B is correct.

- Share with your friends! -

Practice Test Discussion

Login to post your comment here...

Comments

Practice Test Discussion

Login to post your comment here...

- or with social Account -

Comments