mathMocha.QUIZ

Exponents & Roots

    Choose the correct answer :
  1. If x2 ≤ x, then
    (A) x ≤ 0 (B) x ≤ 1
    (C) 0 ≤ x ≤ 1 (D) 0 < x < 1
    Your Answer :
  2. If 0 < x < 1, then which of the following is true ?
    (A)  < x < x2 (B) x2 < x  <
    (C) x2  < < x (D) x < x2  <
    Your Answer :
  3. If x and y are positive integers, and (7x)y = 77, what is the arithmetic mean of x and y ?
    (A) 3.5 (B) 4
    (C) 7 (D) 14
    Your Answer : why?
  4. If , what is s in terms of p, q and r ?
    (A) (B) r − p − q
    (C) p + q − r (D)
    Your Answer :
  5. Let x2 ≤ 2x where x is a positive integer. Then there exists how many such positive integers x ?
    (A) 0 (B) 1
    (C) 2 (D) 3
    Your Answer : why?
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