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Sets, Relations and Functions — quick quiz

5 real JEE Advanced questions on Sets, Relations and Functions. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 2

MEDIUM

Let f: R → R be defined by f(x) = x³ + 2x² - 5x + 7. Let S = {x ∈ R : f(f(f(x))) = x}. Then which of the following is true?