Others Maths Puzzle

If N = 0. ab and a and b are not necessarily distinct, how many values can the denominator take in N? 5/6/3/2

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Others Other Question

There are 116 points in a plane. Two points are taken at a time and are connected to make straight line. If K is the number of mid points of these straight lines then find the minimum value of K.
(a) 116C2 - 116 (b) 22C2
(c) 58C2 (d) None of these . A teacher distributed some chocolates equally among his students and was left with 7 chocolates. Next day, the chocolates remained the same but number of students doubled. He was left with 47 chocolates when he distributed equally among his students. Find the number of students on the first day? 10/20/40/Cannot be determined