TCS Company Numerical Ability

20 men handshake with each other without repetition. What is the total number of handshakes made?
a)190
b)210
c)150
d)250

Read Solution (Total 3)

nC2=20C2=190
9 years agoHelpfull: Yes(4) No(0)

n(n-1)/2=20*19/2=190
9 years agoHelpfull: Yes(1) No(0)
n(n-1)/2= 190
9 years agoHelpfull: Yes(1) No(0)

TCS Other Question

B is taller than j and 3 pillars. P is shorter than B and 2 pillars is j shorter/taller than P?
a)yes
b)no
c)may be
d)can’t find
In T.Nagar the building were numbered from 1 to 100.Then how many 4’s will be present in the numbers?
a)18
b)19
c)20
d)21.