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Updated On 02 Feb, 19
Difficult Functions - General Equation of a Circle-Functions - An Introduction Functions - How to sketch a complicated function - Functions
4.1 ( 11 )
The function f is defined for positive integers n by
f(n)=n+3 if n is odd, f(n)=n2 if n is even. Suppose k is an odd ineteger and that f(f(f(k)))=27. What is the sum of the digits of k?
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