the age of 5 student is 12 years . if four of them 6,11,13 and 16 years , find the age of the fifth child
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Step-by-step explanation:
let the fifth student be x
so mean : sum of observation / no of observation
6+11+13+16+x / 5 = 12
46+x/5 = 12
46+x = 12× 5
46+x = 60
x = 60-46
so, x = 14
therefore the age of fifth child is 14 years
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