Mains Ready By December. Smash Mains & Smash PYQ Admissions Open
Talk to Mentor

Civilsdaily

CSAT › CSAT

CSAT › CSAT

Click Here to add as a preferred source on Google

When ten persons shake hands with one another, in how many ways is it possible ?

Options

(a)

20

(b)

25

(c)

40

(d)

45

Answer

(D)