Q.17. The value of (8–2 – 8–26 ) is :
(A) 8 × 8 –26
(B) 7 × 8 –26
(C) 7 × 7 –25
(D) None of these
Q.18. (18)3.5 ÷ (27)3.5 × 63.5 =2?
(A) 2.5
(B) 3.5
(C) 6.5
(D) 7
Q.19. The value of
(A)
(B)
(C)
(D)
Q.20. If 22n-1 =
(A) -3
(B) 2
(C) -2
(D) 3
Q.21. If 2n+4 – 2n+2 = 3, then n is equal to:
(A) 0
(B) 1
(C) -1
(D) -2
Q.22. If 3x – 3x-1 = 18, then the value of xx is:
(A) 9
(B) 18
(C) 27
(D) 36
Q.23. The value of
(A) 4
(B) 8
(C)
(D)
Q.24. The value of
(A) 36
(B) - 27
(C) -36
(D) 72
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