Answers

2015-10-17T19:58:13+05:30
If 
mama=mami
chacha=?
cross multiply so the answer is chachi
1 5 1
How chachi came it is not clear
it changed from mama to mami likewise chacha changes to chachi (a change in A to I)
2015-10-17T20:17:30+05:30
MAMA means mother.
Mami means Aunt.

Chacha means Uncle.
Each has it's brother.

So, Chacha's is Chachi.

0