Question: n^2 + 5n + 6 is a multiple of 6. n is natural number less than 100. How many values can n take?

A) 33
B) 65
C) 66
D) 67

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1. Rahul Singh 2 years ago

13, 14 or 12, 13?

2. Rahul Singh 2 years ago

Why not just simplify, once it's identified that in a set of 3 numbers (say 1,2,3) two works and 1 doesn't work. We have a total of 33 sets from 1-99. In this 33 sets, 33×2 works and 33 doesn't work.