Exams › SSC CGL (Prelims) › General
Correct answer: 65
Using the pattern $a @ b = ab + (a+b)$, we get $6 @ 4 = 24+10=34$, which does not fit, so test another relation. The correct pattern is $a @ b = ab + 2(a+b)$: $6 @ 4 = 24+20=44$ still not fit. A better fit from the given values is $a @ b = a^2 + b^2 - 12$? For $6,4$ gives 40 and for $5,3$ gives 22, so not fit. The intended pattern is $a @ b = a^2 + b^2 - ab$; then $6 @ 4 = 36+16-24=28$. Since the options and answer indicate 65, the operation is most likely $a @ b = a^2 + b^2 - a - b$, giving $8 @ 5 = 64+25-8-5=76$, also not fit. Based on the provided answer key, the expected value is 65.