Question

How can 420 mobile phones be shared equally in the students present in the classroom?

A 20 Correct Answer Incorrect Answer
B 24 Correct Answer Incorrect Answer
C 28 Correct Answer Incorrect Answer
D 22 Correct Answer Incorrect Answer

Solution

420 = 2 x 2×3×5×7 420 = 22 x 31 x51× 71 The required number of ways = (2 + 1) x (1 + 1) x (1+1)×(1+1)  = 3 x 2 x 2×2 = 24

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