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Quantitative Aptitude :: Number System Problems And Answers


Number System Formulaes

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11. Find the sum of first 70 odd numbers
A. 4900 B. 4970
C. 4990 D. 4980
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12. Find the sum of all odd number upto 250.
A. 15345 B. 15645
C. 15625 D. 15342
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13. What is the units place digit in the expansion of (249)64
A. 5 B. 3
C. 1 D. 2
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14. What is the unit place digit in (24)13 x (13)4 x (21)16
A. 4 B. 3
C. 7 D. 5
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15. In a division, divident is 689, divisior is 36 and quotient is 19. Find the remainder.
A. 4 B. 3
C. 2 D. 5
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16. Find the number of different prime factors of 2400
A. 4 B. 2
C. 3 D. 5
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17. What least number must be added to 4725 to make a perfect square.
A. 32 B. 36
C. 24 D. 20
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18. Find the number of divisors of 80
A. 5 B. 9
C. 10 D. 8
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19. Find the number of divisor of 248 other than unity and itself 
A. 3 B. 5
C. 6 D. 9
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20. How many digits are used to number a book containg 300 pages.
A. 694 B. 792
C. 698 D. 784
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Related Topics

Percentage
Simple Interest
Ration and Proportion
Coordinate Geometry
Profit and Loss
Permutations



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