allery7 ৰ বৰ্গ আৰু 6 ৰ বৰ্গৰ পাৰ্থক্য কোনটো সংখ্যাৰ সমান?
A13
B11
C12
D14
Answer & Solution
Correct answer: A. 13
n ৰ বৰ্গ আৰু (n-1) ৰ বৰ্গৰ পাৰ্থক্য 2n বিয়োগ 1 ৰ সমান, গতিকে n = 7 ৰ বাবে ই 13।
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