Lessons

General Aptitude
9.1 Numbers - General Questions

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Q.

If (64)2 - (36)2 = 20 x x, then x = ?

View Answer

Correct choice: D

Explanation:

20 x x = (64 + 36)(64 - 36) = 100 x 28
⇒ x = (100 × 28)/20 = 140
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