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Antara Biswas from DPS Megacity, Kolkata

Subject :Rea Class : Class 5

Find the missing number, if same rule is followed in all the three figures.

(IMO 2015)

A12
B29
C18
D32

the rule followed is (theproduct of upper two numbers-20,22,and on)so what should be the answer?

Ans 1:

adwitiya saxena from Ryan Internatinational School, Navi Mumbai

Class : Class 6