Subject :IMO Class : Class 6
Six girls met and they greeted each other with a "Hello". How many times was the word "Hello" 
said ?
(a) 6
(b) 15
(c) 30
(d) 45
Ans 1:
Class : Class 6
(c) is the answer
Ans 2:
Class : Class 7
What is this?
Ans 3:
Class : Class 8
Ans 4:
Class : Class 8
5*6=30
Ans 5:
Class : Class 9
That is (c) 30
Ans 6:
Class : Class 8