Quantitative Aptitude Practice Question and Answer
8Q: What will come in place of the question mark (?) in the following number series? 5, 7, ?, 25, 45, 75 1629 05b5cc6cae4d2b4197774dfc0
5b5cc6cae4d2b4197774dfc0- 111false
- 213true
- 315false
- 419false
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Answer : 2. "13"
Explanation :
Answer: B) 13 Explanation: The series given follow the pattern +2, +2+4, +2+4+6, +2+4+6+8, +2+4+6+8+10,... Here ? = 7 + 2 + 4 = 13.
Q: A person walking 6/7 of his usual rate is 30 minutes late. What is his usual time ? 1628 05b5cc720e4d2b4197774f62c
5b5cc720e4d2b4197774f62c- 12 hrs 50 minfalse
- 23 hrs 25 minfalse
- 33 hrstrue
- 42 hrs 5 minfalse
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Answer : 3. "3 hrs"
Explanation :
Answer: C) 3 hrs Explanation: Let t be the usual time. If the usual rate is 1 unit, then the unusual rate is 6/7.Balance by the distance,1 x t = (6/7)(t + 30)7t = 6(t + 30)we get t as,t = 180 minutes = 3 hrs.
Q: At a game of billiards, A can give B 20 points in 60 and A can give C 15 points in 60. How many points can C give B in a game of 90 ? 1628 05b5cc723e4d2b4197774f69a
5b5cc723e4d2b4197774f69a- 19 pointsfalse
- 210 pointstrue
- 311 pointsfalse
- 48 pointsfalse
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Answer : 2. "10 points"
Explanation :
Answer: B) 10 points Explanation: a:b = 60:40a:c = 60:45c/a x a/b = 45/60 x 60/40 = 45/40 = 90/80So C gives B => 10 points.
Q: Evaluate : 3.392-2.6123.39-2.69? 1627 05b5cc728e4d2b4197774f700
5b5cc728e4d2b4197774f700- 13false
- 24false
- 36true
- 41false
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Answer : 3. "6"
Explanation :
Answer: C) 6 Explanation: It is in the form of a2-b2a-b = a+ba-ba-b = a+b Here a = 3.39 b = 2.61 = 3.39 + 2.61 = 6.
Q: The average age of a class is 15.8 years. The average age of the boys in the class is 16.4 years and that of the girls is 15.4 years. What is the ratio of boys to girls in the class ? 1627 05b5cc75ee4d2b4197774fcd4
5b5cc75ee4d2b4197774fcd4- 11:3false
- 22:3true
- 33:2false
- 43:1false
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Answer : 2. "2:3"
Explanation :
Answer: B) 2:3 Explanation: Let number of boys = x , Let number of girls = yTotal numbers of students = x + y(x + y) × 15.8 = 16.4x + 15.4y 0.6x = 0.4yx/y = 0.4/0.6 = 2/3 Ratio of boys and girls in the class is 2:3
Q: What is 85 of 352? 1627 05b5cc6a6e4d2b4197774cd42
5b5cc6a6e4d2b4197774cd42- 121.5%false
- 224.14%true
- 323.68%false
- 425.47%false
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Answer : 2. "24.14%"
Explanation :
Answer: B) 24.14% Explanation: Here 85 of 352 => 85 is what percent in 352 Let p% of 352 is 85 Percentage(%) is generally calculated in the total of 100. => p x 352/100 = 85 => p = 8500/352 = 24.14% Hence, 85 is 24.14% of 352.
Q: The length of two superfast trains are 140 mts and 160 mts respectively. If they run at the speed of 60 km/hr and 80 km/hr respectively in opposite direction, find the time in which they will cross each other ? 1626 05b5cc6cde4d2b4197774e1ae
5b5cc6cde4d2b4197774e1ae- 17.71 sectrue
- 210.48 secfalse
- 39.36 secfalse
- 48.45 secfalse
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Answer : 1. "7.71 sec"
Explanation :
Answer: A) 7.71 sec Explanation: Given L1 = 140 m L2 = 160 m S1 = 60 km/hr S2 = 80 km/hr From the question we get, S1 + S2 = (L1 + L2) / T => (60 + 80) 5/18 m/s = 140 + 160/T => T = 54/7 = 7.71 sec
Q: The number of ways that 7 teachers and 6 students can sit around a table so that no two students are together is 1626 05b5cc7b4e4d2b419777508a1
5b5cc7b4e4d2b419777508a1- 17! x 7!false
- 27! x 6!true
- 36! x 6!false
- 47! x 5!false
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Answer : 2. "7! x 6!"
Explanation :
Answer: B) 7! x 6! Explanation: The students should sit in between two teachers. There are 7 gaps in between teachers when they sit in a roundtable. This can be done in 7P6ways. 7 teachers can sit in (7-1)! ways. Required no.of ways is = 7P6.6! = 7!.6!