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Siddhanth from DPS North Bangalore, Bangalore

Subject :IMO Class : Class 7

The mean of 5 observations is added, then the mean becomes 3.5. Find the value of new observation.

A5
B6
C4
D3

Insufficient information

Ans 1:

Nishantika Parai from Somerville School, Noida, Noida

question is incomplete.