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వర్గాలైన 49 మరియు 36ల మధ్య భేదం ఎంత?

A13
B12
C11
D14
Answer & Solution
Correct answer: A. 13
వరుస వర్గాలు n² మరియు (n-1)² ల మధ్య భేదం 2n - 1 అవుతుంది, ఇది n = 7కి 13 అవుతుంది.
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