Approximation

Quantitative Aptitude(IBPS RRB CL)

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(400% of 49.89)/24.98 = ?^2 – (1680.99)^1/2

4

5

6

7

Explanation:

(400% of 49.89)/24.98 = ?^2 – (1680.99)^1/2
=> ?^2 – (1681)^1/2 = (400% of 50)/25
=> ?^2 = 8+ 41
=> ? = 7

Hence, opiton 4 is the correct answer.

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