(Ans). (B)
(Question). John has 10pairs of dark blue socks and 10pairs of black socks. He keeps them all in the same bag. If he picks out 3socks at random, then what is the probability thathe will get a matching pair?
Options:
(A) 0
(B) 1
(C) 2
(D) 3
(E) 4
(CoT). If he draws any combination of 3 socks he will definitely have the matching pair of either colour.

(Ans). (B)
(Question). Solve:-
111 x 111 x 111 + 555 x 555 x 555 = ?(111 x 111 - 111 x 555 + 555 x 555)
Options:
(A) 888
(B) 666
(C) 555
(D) 988
(E) 889
(CoT). Given Exp. = (a3 + b3) = (a + b) = (111 + 555) = 666 (a2 - ab + b2)

(Ans). (E)
(Question). Find the value of y from (12)^3 x 6^4 432 = y?
Options:
(A) 2450
(B) 2560
(C) 2650
(D) 3500
(E) 5184
(CoT). Given Exp. = (12)3 x 64 = (12)3 x 64 = (12)2 x 62 = (72)2 = 5184
432 12 x 62

(Ans). (E)
(Question).
Find the wrong number below mentioned series
11,150,280,560,800
Options:
(A) 800
(B) 560
(C) 280
(D) 150
(E) 11
(CoT). 11 is the only prime number or odd number in the series.