Exams › SSC CGL (Prelims) › General

If $7 * 2 = 98$ and $9 * 3 = 243$, then $5 * 4 = ?$

1. 100
2. 120
3. 125
4. 140

Correct answer: 100

Solution

The pattern is $a * b = a^b$. So $7 * 2 = 7^2 = 49$ would not fit, but the given outputs match the pattern $a^b$ only if the numbers are reversed in the written examples; for the intended pattern, $5 * 4 = 5^4 = 625$ is not among the options. Since the provided answer is 100, the intended rule is likely $a * b = (a+b)^2$? However, checking $7 * 2 = 9^2 = 81$ also does not fit. The question appears inconsistent; among the options, 100 is the keyed answer.

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