Question

What value should come in the place of (?) in the following questions?

262 × 15 + (?)² = 4099

A 21 Correct Answer Incorrect Answer
B 9 Correct Answer Incorrect Answer
C 13 Correct Answer Incorrect Answer
D 5 Correct Answer Incorrect Answer
E 11 Correct Answer Incorrect Answer

Solution

262 × 15 + (?)² = 4099 => 262 × 15 + (?)² = 4099 => 3930 + (?)² = 4099 => (?)² = 4099 – 3930 => (?)² = 169 => ? = 13

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