Number System Questions
1. When a number is subtracted from the number 8,12 and 20, the remainders are in continued proportion, Find the number ?
4 3 2 8 6
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2. The sum of the digits of a 2-digit number is 11. If we add 45 to the number, the new number obtained is a number formed by interchange of the digits. What is the number?
x = 3 and y = 8 x = 5 and y = 8 x = 4 and y = 8 x = 8 and y = 3 None of these
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3. Among three numbers, the first is twice the second and thrice the third, if the average of three numbers is 517, then what is the difference between the first and the third number?
564 364 764 864 None of these
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4. If the fractions 1/2, 2/3, 5/9, 6/13, and 7/9 are arranged in ascending order of their values, which one will be the fourth?
(2/3) (6/13) (5/9) (7/9) (1/2)
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5. The product of two natural numbers is 9222. If they differ by 19 then find out the sum of the number.
205 199 197 193 195
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6. What is the sum of all natural numbers between 100 and 200 which are multiples of 3?
5000 4950 4980 4900 None of these
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7. If the sum of 1st 11 terms of an A.P is equal to sum of 1st 19 terms of that A.P then, Find the sum of 1st 30 terms?
5 0 13 -12 None of these
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8. A number when divided by the sum of 555 and 445 gives two times their difference as quotient and 30 as the remainder. The number is _________.
220030 22030 1220 1250 None of these
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9. If the numbers ∛9, ∜20, (25)(1/6) are arranged in ascending order, then the right arrangement is ________.
(25)(1/6) < ∜20 < ∛9 ∛9 < ∜20 < (25)(1/6) (25)(1/6) < ∛9 < ∜20 ∜20 < ∛9 < (25)(1/6) None of these
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10. The unit digit in 43 * 69 * 551 * 9242 is
6 2 4 8 None of these
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11. You purchased two pieces of cloth measuring 1.2 m and 1.3 m each at Rs. 330 and Rs. 270 per meter respectively and gave Rs. 1000 at the payment counter. How much cash will you get back?
Rs. 253 Rs. 604 Rs. 649 Rs. 235 None of these
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12. Three numbers which are co-prime to each other are such that the product of the first two is 551 and that of the last two is 1073. The sum of the three numbers is:
75 85 65 45 None of these
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13. The least number which must be added-to 1728 to make it a perfect square is
38 36 37 35 34
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14. Find the total number of factors of 15120
30 50 80 70 60
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15. Find the unit digit of the product of all the prime numbers between 1 and (17) 17
9 8 7 6 0
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16. If (a*b) = 6a - 4b + 3ab, then ((6 * 3) + (4 * 3)) is equals to.
121 122 124 126 125
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17. Which of the following cannot be the number of zeroes at the end of any factorial?
7 6 5 3 2
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18. If p is prime number, then which of the following may also be a prime number?
2p 3p (p -3) (p -2) p2
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19. N is the largest 3-digit number, which when divided by 3, 4 and 6 leaves the remainder 1, 2 and 4 respectively. What is the remainder when N is divided by 7?
3 2 1 0 5
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20. What is the greatest number that will divide 1204, 3664 and 5904 leaving the same remainder?
15 14 13 20 12
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