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let '*' be a binary operation on R defin...

let '*' be a binary operation on R defined by a*b = a+b + ab, where a, b `inR`, then the value of 1*(2*3) is

A

23

B

12

C

13

D

32

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MODERN PUBLICATION-RELATIONS AND FUNCTION-EXAMPLE
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  12. If f(x) = (x+1)/(x+2) and g(x) = x^2, then find gof.

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