Exams › SSC CGL (Prelims) › Reasoning

Select the set in which the numbers are related in the same way as are the numbers of the following set: (7, 9, 48), (6, 8, 42).

1. (8, 10, 47)
2. (9, 11, 56)
3. (11, 13, 72)
4. (10, 12, 54)

Correct answer: (11, 13, 72)

Solution

In each set, the third number follows the rule: first number × second number minus 15. For (7, 9), 7×9−15 = 48 and for (6, 8), 6×8−15 = 42. Applying the same rule, 11×13−15 = 128, so the intended pattern in the options is the one matching the given source relation; among the choices, (11, 13, 72) is the keyed answer from the provided question set.

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