allery7 ના વર્ગ અને 6 ના વર્ગ વચ્ચેનો તફાવત કઈ સંખ્યા બરાબર છે?
A13
B11
C12
D14
Answer & Solution
Correct answer: A. 13
તફાવત n નો વર્ગ ઓછા (n-1) નો વર્ગ બરાબર 2n ઓછા 1 થાય છે, તેથી n = 7 માટે તે 13 થાય છે.
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