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7 ਵਰਗ ਅਤੇ 6 ਵਰਗ ਵਿੱਚ ਅੰਤਰ ਕਿਹੜੀ ਸੰਖਿਆ ਦੇ ਬਰਾਬਰ ਹੈ?

A13
B11
C12
D14
Answer & Solution
Correct answer: A. 13
n ਵਰਗ ਘਟਾਓ (n-1) ਵਰਗ ਦਾ ਅੰਤਰ 2n ਘਟਾਓ 1 ਦੇ ਬਰਾਬਰ ਹੈ, ਇਸ ਲਈ n = 7 ਲਈ ਇਹ 13 ਹੈ।
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