If the product of three consecutive integers is 720, then the sum of the two largest integers is-

A 10

B 15

C 17

D 19

Solution

Correct Answer: Option D

720 =  2 × 2 × 2 × 2 × 3 × 3 × 5
       = (2 × 2 × 2) ×  (3 × 3) × (2 × 5)
       = 8 × 9 × 10 

 The sum of the two largest integers is = 9 + 10 = 19

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