Rationale: 8-(2*0) = 8
8-(2*1) = 6
6-(2*2) = 2
2-(2*3) = -4
The answer: (A)
Question: What is the next number of the following sequence.
8, 8, 6, 2,.... ?
Options:
(A) -4
(B) -5
(C) -6
(D) -7
(E) -8
Reasoning: If he draws any combination of 3 socks he will definitely have the matching pair of either colour.
Ans: (A)
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) 1
(B) 3
(C) 5
(D) 8
(E) 9
Rationale: Total number of ways = 8!*2!.
The answer: (E)
Question: There are 11 person among whom 2 are brother. The total no.of ways in which these persons can be seated around a round table so that exactly 1 person sit between the brothers, is equal to?
Options:
(A) 4!*2!
(B) 7!*2!
(C) 6!*1!
(D) 2!*1!
(E) 8!*2!
Reasoning: 8 * 86 = 688 10 = 678
Ans: (B)
Question: A team of eight entered for a shooting competition. The best marks man scored 82 points. If he had scored 92 points, the average scores for. The team would have been 86. How many points altogether did the team score?
Options:
(A) 662
(B) 678
(C) 652
(D) 642
(E) 721
Rationale: P = P(A wins, B wins, C loses) + P(A wins, B loses, C wins) + P(A loses, B wins, C wins) = 2/5*3/8*5/7 + 2/5*5/8*2/7 + 3/5*3/8*2/7 = 77/280.
The answer: (E)
Question: Alice, Benjamin, and Carol each try independently to win a carnival game. If their individual probabilities for success are 2/5, 3/8, and 2/7, respectively, what is the probability that exactly two of the three players will win but one will lose?
Options:
(A) 3/140
(B) 1/280
(C) 3/280
(D) 4/56
(E) 77/280
Rationale: 400*(90/100)*(95/100) = 342
The answer: (C)
Question: The sale price sarees listed for Rs.400 after successive discount is 10% and 5% is?
Options:
(A) 349
(B) 349
(C) 342
(D) 346
(E) 344