Practice Test Discussion

What approximate value should come in place of the question mark (?) in the given questions?

$8787 \div 343 \times \sqrt{50} = ?$

[IBPS (PO), 2013]

250

140

180

100

280

Explanation

Given,

$\begin{array}{l} 8787 \div 343 \times \sqrt{50} = \end{array} ?$

It can be approximated as

= $\begin{array}{l} 8800 \div 350 \times \sqrt{49} =? \end{array}$

Now, follow the order of BODMAS,

We get

= 8800÷350×7=?

= 25×7

= 175 ≈ 180

Hence, Option C is correct.

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