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Chaitanya jha from Delhi Public School, Navi Mumbai
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 ?

(a) 5
(b) 10
(c) 15
(d) 20


a

Ans 1:

Varshit Agarwal from VBPS , Noida
Class : Class 7
b

Ans 2:

OISHIK KUNDU from Delhi Public school North kolkata, baranagar
Class : Class 4

Ans 3:

Iniyaa M from DAV public school, Chennai
Class : Class 4
is it not 20... that is the option D??

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