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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:

Class : Class 4
correct ans is 10

Ans 2:

Class : Class 4

Ans 3:

Class : Class 8

Ans 4:

Class : Class 7

Ans 5:

Class : Class 5

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