Patni Company Numerical Ability Arithmetic

a certain organization has three committees.only two persons are members of all committees,but every pair of committees have three members in common.what is the least possible no of member of members on any one committee?

a)4 b)5 c)6 d)none of these.

Read Solution (Total 3)

the least possible no of member of members on any one committee = 4 .. option a)

In all 3 committees, say X,Y,Z, 2 persons say A and B are common.
C is common between X and Y.
D is common between Y and Z.
E is common between X and Z.

so X committee has ABCE. Y committee has ABCD. Z committee has ABDE.
12 years agoHelpfull: Yes(70) No(13)

using wen diagram u can get it... 4) none of these....
12 years agoHelpfull: Yes(14) No(28)
answer is 4
8 years agoHelpfull: Yes(1) No(2)

Patni Other Question

Right now a plane is at 3000m from ground level and descending at a speed of xkm(i dont remember the number). It will be touching the ground in 10 secs. So what distance is the plane now from the ground? if x,y,z are three +ve integers such that x is greater tahn y and y is greater tahn z,then which of the following is definitely true?
a.x% of y is greater than y% of z
b.y% of x is greater than z% of y
c.z% of x is greater than y% of z
d.all of these