RRB NTPC Mains Numerical Aptitude Questions

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RRB NTPC Mains Numerical Aptitude

RRB NTPC Mains Numerical Aptitude Questions.

RRB NTPC Mains Numerical Aptitude Questions:

  • RRB NTPC Mains Exam will be conducted from 17th to 19th January 2017.Your preparation must be going in full swing. Now it is time to go through RRB NTPC Mains Numerical Aptitude Questions.
  • These RRB NTPC Mains Numerical Aptitude Questions are designed by our Team of Experts that includes Previous Year Toppers of Railways.
  • There is a high chance that out of these RRB NTPC Mains Numerical Aptitude Questions, you may get same or similar questions in the Exam.
  • These RRB NTPC Mains Numerical Aptitude Questions are a must for all the serious aspirants

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RRB NTPC Mains Numerical Aptitude Questions as per the Exam Pattern


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RRB NTPC Mains Numerical Aptitude Questions:

1. If 3 men or 6 boys can do a piece of work in 20 days then how many days with 6 men and 8 boys take to do the same work?
A. 5
B. 8
C. 10
D. 6
2. Diagonals of rhombus are
A. equal
B. half of one diagonal
C. of different length
D. none of above
3. What is the length of side of square whose area is 64 m2
A. 16 m
B. 32 m
C. 8 m
D. 64 m

4. What should come on place of question mark (?) in the following questions?

24% of 250 – ? = 18% of 50

A. 51
B. 69
C. 71
D. 59
5. In what time would a sum double itself at 12121212% per annum simple interest?
A. 6 yr
B. 7 yr
C. 9 yr
D. 8yr

Answers for RRB NTPC Mains Numerical Aptitude Questions:

  1. D
  2. C
  3. C
  4. A
  5. D

RRB NTPC Mains Numerical Aptitude Questions:

6. The area of a regular hexagon (in sq. m) of side 8 metres, is-
A. 483–√483m2
B. 523–√523m2
C. 683–√683m2
D. 963–√963m2
7. The sum of the present age of A, B and C are 90 years. Six years ago, their ages were in the ratio 3 : 2 : 1 . What is the present age of C?
A. 12
B. 14
C. 18
D. 20
8. What is the least number which when divided by 15, 17 and 18 leaves remainder 3 in each case?
A. 1523
B. 1527
C. 1533
D. 1537
9.If the difference between areas of the circumcircle and incircle of a equilateral triangle is 44 cm2., then the area of the triangle is –
A. 28 cm2.
B. 73–√cm273cm2
C. 143–√cm2143cm2
D. 21cm2.
10. A Train 4321 running at 81 km/hr takes 180 seconds to pass a platform. Next it takes 75 seconds to pass a man walking at 9 km/hr in the same direction in which the train is going. Find the ratio length of the train and the length of the platform ?
A. 11 : 23
B. 10 : 17
C. 9 : 13
D. 11 : 17

Answers for RRB NTPC Mains Numerical Aptitude Questions:

6. D

7. C

8. C

9. C

10. B

RRB NTPC Mains Numerical Aptitude Questions:

11. The price of Sugar falls down by 20% and a house wife is able to buy 5 kg by more for Rs. 100. Find the original price of sugar in Rs. per kg.
A. Rs. 8
B. Rs. 9
C. Rs. 6
D. Rs. 5
12. The actual area of a rectangle is 60 cm2,but while measuring its length a student decreases it by 20% and the breadth increases by 25%. The percentage error in area, calculated by the student is –
A. 5%
B. 25%
C. 30%
D. None of these
13.The area of a triangle is half the area of a square. The perimeter of the square is 224 cms. What is the area of the triangle?
A. 1856 cm²
B. 1568 cm²
C. 1558 cm²
D. 1586 cm²
14.There are five persons A, B, C, D, and E. A weighs twice as much as B. Weight of B is 50% of the weight of C. Weight of D is 40% of that of E. Weight of E is 125% of the weight of A. The person with least weight is—
A. C
B. D
C.B and D
D. B
15. The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
A. 0
B. 1
C. 10
D. 19

Answers for RRB NTPC Mains Numerical Aptitude Questions:

11. D

12. D

13. B

14. C

15. D

RRB NTPC Mains Numerical Aptitude Questions:

16. The difference between a discount of 40% on Rs.500 and two successive discount of 36% and 4% on the same amount is
A. 0
B. Rs 2
C. Rs 3.60
D. Rs.7.20
E
Rs 5.20
17. The value of (2–√+12–√)2(2+12)2
A. 5/2
B. 11/2
C. 9/2
D. 11/2
18. A vertical pole stands on the level ground. From a point on the ground 25m away from the foot of the pole, the angle of elevation of its top is found to be 600600 . Find the height of the pole.
A. 12.5 3–√3 m
B. 25 3–√3 m
C. 50 3–√3 m
D. none of these

19. In the adjoining figure ,AB II DE ,∠ABC =55o and ∠ EDC =35o then find ∠BCD is –

A. 900
B. 450
C. 2212°2212°
D. 670
20. In ∠XYZ, ∠Y = 90o , XY = 2ƒ√6 & XZ-YZ=2 then the value of sec X – tanX is equal to-
A. 2
B. 1/ƒ√5
C. 1/√3
D. 1/ƒ√6

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Answers for RRB NTPC Mains Numerical Aptitude Questions:

16. D

17. C

18. B

19. A

20. D

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RRB NTPC Mains Numerical Aptitude: Books to be referred

BOOK COVER NAME OF BOOK ONLINE PURCHASE
Fast Track Objective Arithmetic

Fast Track Objective Arithmetic by Rajesh Verma

download
Buy at amazon

Quantitative Aptitude for Competitive Examinations

Quantitative Aptitude for Competitive Examinations by R.S. Aggarwal 

Buy from Flipkart
Buy at amazon
Advance maths for General Competitions Advance maths for General Competitions by Rakesh Yadav Buy from Flipkart
Buy at amazon

 

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