Reasoning: Total number of ways = 7!*2!.
Ans: (B)
Question: There are 10person among whom 2are brother. The total no.of ways in which these persons can be seated around a round table so that exactly 1person sit between the brothers, is equal to?
Options:
(A) 7!*1!
(B) 7!*2!
(C) 6!*2!
(D) 8!*2!
(E) 6!*2!
Rationale: A's one day's work = 1/30
B's one day's work = 1/45
(A + B)'s one day's work = 1/30 + 1/45 = 1/18
The part of the work completed in 4 days = 4 (1/18) = 2/9.
The answer: (E)
Question: Two persons A and B can complete a piece of work in 30 days and 45 days respectively. If they work together, what part of the work will be completed in 4 days?
Options:
(A) 2/5
(B) 1/6
(C) 1/4
(D) 1/9
(E) 2/9
Reasoning: 25/100*1/5*(total) = 10
1/20*(total) = 10
(total) = 10*20 = 200
Ans: (C)
Question: Twenty five percent of Country Y's yearly exports come from fruit exports. One-fifth of all fruit exports from Country Y are orange exports. If country Y generates $10 million from its orange exports, how much money does it generate from its yearly total of exports?
Options:
(A) $2125m
(B) $25m
(C) $200m
(D) $300m
(E) $153m
Rationale: Y and U Because in committee b the individuals are S and X so in committee c the individuals will be Y and U
The answer: (D)
Question: In case T, S and X are the only individuals sewing on committee B, the members of committee C should be:
Options:
(A) Z and Y
(B) Z and W
(C) Y and V
(D) Y and U
(E) Y and W
Reasoning: Number = 459108/435540
Ans: (E)
Question: If 49 of 310 of 58 of a number is 45, what is the number?
Options:
(A) 450
(B) 550
(C) 560
(D) 650
(E) None of these
Reasoning: Required time = (5 1/4)/3 + (5 1/4)/7 = 2 1/2 hours.
Ans: (A)
Question: A man walks at a speed of 3 km/hr and runs at a speed of 7 km/hr. How much time will the man require to cover a distance of 10 1/2 km, if he completes half of the distance, i.e., (5 1/4) km on foot and the other half by running?
Options:
(A) 2 1/2
(B) 2 1/6
(C) 4 1/2
(D) 2 1/1
(E) 2 1/8