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Subject :NCO    Class : Class 3

A 'Happy Journey!' greeting was exchanged exactly once between two good friends. How many 'Happy Journey!' greetings were exchanged among eight good friends?
(a) 32
(b) 42
(c) 38
(d) 28


Ans 1:

Class : Class 6
C

Ans 2:

Class : Class 3
D

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