Elitmus Exam Numerical Ability Number System

12 people {a1, a2, …, a12} meet and shake hands in a circular fashion. In other words, there are totally 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, …, {a11, a12}, {a12, a1}. Then size of the smallest set of people such that the rest have shaken hands with at least one person in the set is

(a) 12
(b) 4
(c) 18
(d) 11

Read Solution (Total 11)

Elitmus Other Question

If abc is 3-digit no. Have values a,b,c..
Calculate all the values havng atleast two of three digits are same??

1).240
2).248
3).252
4).266
i attempt 6 in quant out of which 3 are correct....
attempt 5 in ps out of which 3 are correct
and in english i attempt 6 out of which 4 are correct...what will be my percentile....plzzz help