Question

What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.) 

(?)2 + 6.113 = 27.92 – 39.03 

A 19 Correct Answer Incorrect Answer
B 23 Correct Answer Incorrect Answer
C 12 Correct Answer Incorrect Answer
D 28 Correct Answer Incorrect Answer
E 36 Correct Answer Incorrect Answer

Solution

(?)2 + 63 = 282 – 39 (?)2 + 216 = 784 – 39 (?)2 = 745 – 216 (?)2 = 529 ? = 23

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