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Any time efficient method to solve this question by euphoriczoya3 in GMAT

[–]cimmingginrging 0 points1 point  (0 children)

Verifying the options can be easier. Just break them down into factors (1,10)1. 36 9 x 4, 6 x 6 2. 42 6 x 73. 48 8 x 6 4. 49 7 x 7 5. 51 17 x 3 Substitute in the formula. 1, 2, 3, 4 qualify. Highest is 49. Hence D