# Number Series Questions for SBI PO & IBPS Clerk 2018

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Hello Aspirants. Welcome to Online Quantitative Aptitude Section in Examin.co.in. Here we are creating question sample in Number Series, which is common for all the competitive exams. This quiz contains important questions which match the pattern of banking exams, so make sure you attempt today’s Quantitative Aptitude IBPS Clerk Quiz to check your preparation level. Most important questions of Number Series. We have included Some questions that are repeatedly asked in bank exams !!!

## Number Series Questions for SBI PO & IBPS Clerk 2018

1.

How many seconds will a 500 metre long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?
 A. 25 B. 30 C. 40 D. 45

2.

Two trains are running in opposite directions with the same speed. If the length of each train is 120 metres and they cross each other in 12 seconds, then the speed of each train (in km/hr) is:
 A. 10 B. 18 C. 36 D. 72

3.

Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time (in seconds) which they take to cross each other, is:
 A. 9 B. 9.6 C. 10 D. 10.8

4.

Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is:
 A. 50 m B. 72 m C. 80 m D. 82 m

5.

A jogger running at 9 kmph alongside a railway track in 240 metres ahead of the engine of a 120 metres long train running at 45 kmph in the same direction. In how much time will the train pass the jogger?
 A. 3.6 sec B. 18 sec C. 36 sec D. 72 sec

Each of the questions given below consists of a statement and / or a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statement(s) is / are sufficient to answer the given question. Read the both statements and

• Give answer (A) if the data in Statement I alone are sufficient to answer the question, while the data in Statement II alone are not sufficient to answer the question.
• Give answer (B) if the data in Statement II alone are sufficient to answer the question, while the data in Statement I alone are not sufficient to answer the question.
• Give answer (C) if the data either in Statement I or in Statement II alone are sufficient to answer the question.
• Give answer (D) if the data even in both Statements I and II together are not sufficient to answer the question.
• Give answer(E) if the data in both Statements I and II together are necessary to answer the question.

6.

 What is the speed of the train whose length is 210 metres? I. The train crosses another train (Howrah Express/12869) of 300 metres length running in opposite direction in 10 seconds. II. The train crosses another train (Howrah Express/12869) running in the same direction at the speed of 60 km/hr in 30 seconds.
 A. I alone sufficient while II alone not sufficient to answer B. II alone sufficient while I alone not sufficient to answer C. Either I or II alone sufficient to answer D. Both I and II are not sufficient to answer E. Both I and II are necessary to answer

7.

 What is the length of a running train crossing another 180 metre long train running in the opposite direction? I. The relative speed of the two trains was 150 kmph. II. The trains took 9 seconds to cross each other.
 A. I alone sufficient while II alone not sufficient to answer B. II alone sufficient while I alone not sufficient to answer C. Either I or II alone sufficient to answer D. Both I and II are not sufficient to answer E. Both I and II are necessary to answer

8.

 What is the length of a running train? I. The train crosses a man in 9 seconds. II. The train crosses a 240 metre long platform in 24 seconds.
 A. I alone sufficient while II alone not sufficient to answer B. II alone sufficient while I alone not sufficient to answer C. Either I or II alone sufficient to answer D. Both I and II are not sufficient to answer E. Both I and II are necessary to answer

Solutions

1.

Speed of the train relative to man= (63 – 3) km/hr
= 60 km/hr
 = 60 x 5 m/sec 18
 = 50 m/sec. 3 Time taken to pass the man
 = 500 x 3 sec 50
= 30 sec.

2.

Let the speed of each train be x m/sec.

Then, relative speed of the two trains = 2x m/sec.

 So, 2x = (120 + 120) 12 2x = 20 x = 10. Speed of each train = 10 m/sec = 10 x 18 km/hr = 36 km/hr. 5

3.

 Relative speed = (60 + 40) km/hr = 100 x 5 m/sec = 250 m/sec. 18 9

Distance covered in crossing each other = (140 + 160) m = 300 m.

 Required time = 300 x 9 sec = 54 sec = 10.8 sec. 250 5

4.

Let the length of each train be x metres.

Then, distance covered = 2x metres.

Relative speed = (46 – 36) km/hr

 = 10 x 5 m/sec 18
 = 25 m/sec 9 2x = 25 36 9 2x = 100 x = 50

5.

Speed of train relative to jogger = (45 – 9) km/hr = 36 km/hr.

 = 36 x 5 m/sec 18

= 10 m/sec.

Distance to be covered = (240 + 120) m = 360 m. Time taken = 360 sec = 36 sec. 10

6.

 Time taken to cross the train, running in opposite directions = (l1 + l2) sec. (u + v) 10 = (210 + 300) (u + v) u + v = 51.

 Time taken to cross the train, running in same direction = (l1 + l2) sec. (u – v) 30 = (210 + 300) (u – 60 x (5/18)) u = 17 + 50 m/sec. 3

Thus, u and v can be obtained. Correct answer is (E)

7.

Let the two trains of length a metres and b metres be moving in opposite directions at u m/s and v m/s.

 Time taken to cross each other = (a + b) sec. (u + v)
 Now, b = 180, u + v = 150 x 5 m/sec = 125 m/sec. 18 3 9 = a + 180 (125/3) a = (375 – 180) = 195 m

8.

 Time taken by train to cross a man = Length of train Speed = l ….(i) Speed of train 9
 Time taken by train to cross a platform = (Length of train + Length of platform) Speed = l + 240 ….(ii) Speed of train 24
 From (i) and (ii), we get l = l + 240 . 9 24

Thus, l can be obtained. So both I and II are necessary to get the answer. The correct answer is (E)