Number System Questions and answers

Topics

  1. Aptitude
    1. Compound interest
    2. Boat and Stream
    3. Trains
    4. Percentage
    5. Discount
    6. Mixture and Allegation
    7. Unitary Method
    8. Work and Wages
    9. Pipes and Cisterns
    10. Linear Equations
    11. Approximation
    12. Word problems
    13. Number System
    14. Time and Distance
    15. Average
    16. Ratio and Proportions
    17. Profit and Loss
    18. Partnership
    19. Permutation and combination
    20. Probability
    21. Problem on ages
    22. Time and work
    23. Simple and compound interest
    24. Mensuration
    25. Number series
51). Find the sum of first 37 odd numbers.
A). 1369
B). 1295
C). 1388
D). 1875
52). Find the sum of first 84 even numbers.
A). 7140
B). 7540
C). 6720
D). 8832
53). Sum of first 15 multiples of 8 is
A). 960
B). 660
C). 1200
D). 1060
54). The poduct of four consecutive natural numbers plus one is
A). a non-square
B). always sum of two square numbers
C). a square
D). None of the above
55). Find the unit digit in the product of (268 x 539 x 826 x 102).
A). 5
B). 3
C). 4
D). 2


56). Find the unit digit in the product of (4326 x 5321).
A). 6
B). 8
C). 1
D). 3
57). Find the last two-digits of 15 x 37 x 63 x 51 x 97 x 17
A). 35
B). 45
C). 55
D). 85
58). How many rational numbers are there between 1 and 1000?
A). 998
B). 999
C). 1000
D). Infinite
59). The sum of 5 consecutive even numbers A,B,C,D and E is 130. What is the product of A and E ?
A). 720
B). 616
C). 660
D). 672
60). The sum of the five consecutive numbers is equal to 170. What is the product of largest and the smallest numbers?
A). 1512
B). 1102
C). 1152
D). 1210
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