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Que. Let f(n), g(n) and h(n) be functions defined for positive inter such that f(n) = O(g(n)), g(n) ≠ O(f(n)), g(n) = O(h(n)), and h(n) = O(g(n)). Which one of the following statements is FALSE?  
a. f(n) + g(n) = O(h(n)) + h(n))
b. f(n) = O(h(n))
c. fh(n) ≠ O(f(n))
d. f(n)h(n) ≠ O(g(n)h(n))
Answer:f(n)h(n) ≠ O(g(n)h(n))
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