Reasoning: The probability of selecting girl is: 25/100 = 1/4
The probability of selecting rich is: 20/100 = 1/5
The probability of selecting fair complexioned is: 20/100 = 1/5
Three are independent;probability of rich and fair complexioned girl is:
(1/4) Ã—(1/5) Ã— (1/5) = 1/125
Ans: (A)
Question: A class consists of 100 students, 25 of them are girls and 75 boys; 20 of them are rich and remaining poor; 20 of them are fair complexioned. The probability of selecting a fair complexioned rich girl is
Options:
(A) 1/125
(B) 1/59
(C) 1/56
(D) 1/54
(E) 1/53
Rationale: 70 + 75 = 145 * 5/18 = 725/18 mps
D = 150 + 100 = 250 m
T = 250 * 18/725 = 180/29 = 6 6/29 sec
The answer: (A)
Question: Two trains are moving at 75 kmph and 70 kmph in opposite directions. Their lengths are 150 m and 100 m respectively. The time they will take to pass each other completely is?
Options:
(A) 6 6/29 sec
(B) 7 1/7 sec
(C) 7 2/2 sec
(D) 8 1/2 sec
(E) 7 1/19 sec
Reasoning: Integer is divisible by 3 - Sum of digits is divisible by 3
Ans: (D)
Question: The number N is 5,2H4, where H represents the ten's digit. If N is divisible by 3, what is the value of H?
Options:
(A) 2
(B) 3
(C) 5
(D) 4
(E) 9
Rationale: 200/48 * 18/5 = 15 km/hr
The answer: (B)
Question: A boy runs 200 metres in 48 seconds. What is his speed ?
Options:
(A) 10 km/hr
(B) 15 km/hr
(C) 11 km/hr
(D) 12 km/hr
(E) 14 km/hr
Reasoning: Speed upstream = 27/9 = 3 kmph
Speed down stream = 81/3 = 27 kmph
Speed of stream = ½ (27-3) = 12 kmph
Ans: (A)
Question: If sushi rows 27 km upstream and 81 km down steam taking 9 hours each, then the speed of the stream
Options:
(A) 12 kmph
(B) 13 kmph
(C) 22 kmph
(D) 20 kmph
(E) 15 kmph
Reasoning: Distance travelled = 140 + 210m = 350m
Speed = 60 * 5/8 = 50/3m
Time = 350 * 3/50 = 21 Seconds
Ans: (C)

Question: A bullet train 140 m long is running at 60 kmph. In how much time will it pass a platform 210 m long?
Options:
(A) 34 Seconds
(B) 22 Seconds
(C) 21 Seconds
(D) 24 Seconds
(E) 29 Seconds
Reasoning: The probability of selecting girl is: 25/100 = 1/4
The probability of selecting rich is: 20/100 = 1/5
The probability of selecting fair complexioned is: 20/100 = 1/5
Three are independent;probability of rich and fair complexioned girl is:
(1/4) Ã—(1/5) Ã— (1/5) = 1/125
Ans: (A)
Question: A class consists of 100 students, 25 of them are girls and 75 boys; 20 of them are rich and remaining poor; 20 of them are fair complexioned. The probability of selecting a fair complexioned rich girl is
Options:
(A) 1/125
(B) 1/59
(C) 1/56
(D) 1/54
(E) 1/53
Rationale: 70 + 75 = 145 * 5/18 = 725/18 mps
D = 150 + 100 = 250 m
T = 250 * 18/725 = 180/29 = 6 6/29 sec
The answer: (A)
Question: Two trains are moving at 75 kmph and 70 kmph in opposite directions. Their lengths are 150 m and 100 m respectively. The time they will take to pass each other completely is?
Options:
(A) 6 6/29 sec
(B) 7 1/7 sec
(C) 7 2/2 sec
(D) 8 1/2 sec
(E) 7 1/19 sec
Reasoning: Integer is divisible by 3 - Sum of digits is divisible by 3
Ans: (D)
Question: The number N is 5,2H4, where H represents the ten's digit. If N is divisible by 3, what is the value of H?
Options:
(A) 2
(B) 3
(C) 5
(D) 4
(E) 9
Rationale: 200/48 * 18/5 = 15 km/hr
The answer: (B)
Question: A boy runs 200 metres in 48 seconds. What is his speed ?
Options:
(A) 10 km/hr
(B) 15 km/hr
(C) 11 km/hr
(D) 12 km/hr
(E) 14 km/hr
Reasoning: Speed upstream = 27/9 = 3 kmph
Speed down stream = 81/3 = 27 kmph
Speed of stream = ½ (27-3) = 12 kmph
Ans: (A)
Question: If sushi rows 27 km upstream and 81 km down steam taking 9 hours each, then the speed of the stream
Options:
(A) 12 kmph
(B) 13 kmph
(C) 22 kmph
(D) 20 kmph
(E) 15 kmph
Reasoning: Distance travelled = 140 + 210m = 350m
Speed = 60 * 5/8 = 50/3m
Time = 350 * 3/50 = 21 Seconds
Ans: (C)

user
Question: A bullet train 140 m long is running at 60 kmph. In how much time will it pass a platform 210 m long?
Options:
(A) 34 Seconds
(B) 22 Seconds
(C) 21 Seconds
(D) 24 Seconds
(E) 29 Seconds
assistant
Reasoning: The probability of selecting girl is: 25/100 = 1/4
The probability of selecting rich is: 20/100 = 1/5
The probability of selecting fair complexioned is: 20/100 = 1/5
Three are independent;probability of rich and fair complexioned girl is:
(1/4) Ã—(1/5) Ã— (1/5) = 1/125
Ans: (A)
Question: A class consists of 100 students, 25 of them are girls and 75 boys; 20 of them are rich and remaining poor; 20 of them are fair complexioned. The probability of selecting a fair complexioned rich girl is
Options:
(A) 1/125
(B) 1/59
(C) 1/56
(D) 1/54
(E) 1/53
Rationale: 70 + 75 = 145 * 5/18 = 725/18 mps
D = 150 + 100 = 250 m
T = 250 * 18/725 = 180/29 = 6 6/29 sec
The answer: (A)
Question: Two trains are moving at 75 kmph and 70 kmph in opposite directions. Their lengths are 150 m and 100 m respectively. The time they will take to pass each other completely is?
Options:
(A) 6 6/29 sec
(B) 7 1/7 sec
(C) 7 2/2 sec
(D) 8 1/2 sec
(E) 7 1/19 sec
Reasoning: Integer is divisible by 3 - Sum of digits is divisible by 3
Ans: (D)
Question: The number N is 5,2H4, where H represents the ten's digit. If N is divisible by 3, what is the value of H?
Options:
(A) 2
(B) 3
(C) 5
(D) 4
(E) 9
Rationale: 200/48 * 18/5 = 15 km/hr
The answer: (B)
Question: A boy runs 200 metres in 48 seconds. What is his speed ?
Options:
(A) 10 km/hr
(B) 15 km/hr
(C) 11 km/hr
(D) 12 km/hr
(E) 14 km/hr
Reasoning: Speed upstream = 27/9 = 3 kmph
Speed down stream = 81/3 = 27 kmph
Speed of stream = ½ (27-3) = 12 kmph
Ans: (A)
Question: If sushi rows 27 km upstream and 81 km down steam taking 9 hours each, then the speed of the stream
Options:
(A) 12 kmph
(B) 13 kmph
(C) 22 kmph
(D) 20 kmph
(E) 15 kmph
Reasoning: Distance travelled = 140 + 210m = 350m
Speed = 60 * 5/8 = 50/3m
Time = 350 * 3/50 = 21 Seconds
Ans: (C)

Question: A bullet train 140 m long is running at 60 kmph. In how much time will it pass a platform 210 m long?
Options:
(A) 34 Seconds
(B) 22 Seconds
(C) 21 Seconds
(D) 24 Seconds
(E) 29 Seconds