TCS Company Logical Reasoning Mathematical Reasoning

23 people are there, they are shaking hands together, how many hand shakes possible, if they are in pair of cyclic sequence.

Read Solution (Total 7)

for n people for cyclic handshake--->no of handshakes =n.
.........................linear.................--->............................ =n-1.

u can check this by taking a value of n such as 3.
answer is 23.
14 years agoHelpfull: Yes(31) No(2)

23 handshake
14 years agoHelpfull: Yes(8) No(2)
23
14 years agoHelpfull: Yes(5) No(0)
ans is 22.
at maximum 22 handshakes only possible if 23 means there is a cyclic sequence.
14 years agoHelpfull: Yes(4) No(14)
22
14 years agoHelpfull: Yes(3) No(11)
Ans:22
14 years agoHelpfull: Yes(2) No(19)
clock wise 22
anticlockwise 22
total 44
9 years agoHelpfull: Yes(0) No(0)

TCS Other Question

A circular dartboard of radius 1 foot is at a distance of 20 feet from you. You throw a dart at it and it
hits the dartboard at some point Q in the circle. What is the probability that Q is closer to the center of the circle than the periphery?
option
a) 0.75
b) 1
c) 0.5
d) 0.25
One grandfather has three grandchildren, two of their age difference is 3, eldest child age is 3 times youngest child's age and eldest child's age is two times of sum of other two children. What is the age of eldest child?