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Durvesh from meru international school, hyderabad

Subject :IMO Class : Class 4

There were 5 pupils in a room. Each pupil shook hands once with each of the other pupils. How many handshakes took place?

A5
B10
C15
D20

Ans 1:

Durvesh from meru international school, hyderabad

5 4 3 2 1 = 15, answer is 15