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Quantitative Aptitude :: Number System Problems And Answers


Number System Formulaes

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51. 7777 + 777 + 77 + 7 = ?
A. 8316 B. 8459
C. 8638 D. 8724
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52. If n is a natural numbe, then(n3 - n)is always divisible by
A. 8 B. 6
C. 12 D. Can't be determined
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53. If x is an even integer, then which of the following is a true statement?
A. x is a prime number B. (x2 + 4) is an even integer
C. x is a Composite number D. (x2 - 1) is an even integer
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54. Which of the following numbers is prime?
A. 441 B. 223
C. 357 D. 153
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55. The difference between the squares of two consecutive odd integers is always divisible by
A. 5 B. 8
C. 3 D. None of these
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56. In a division sum, the divisor is 5 times the quotient and two times the remainder. If the remainder is 40, then the dividend is
A. 1320 B. 1380
C. 1395 D. None  of these
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57. A Positive number which when added to 999 given a sum which is greater than when it is multiplied by 999. Which of the following could be the value of the positive integer?
A. 5 B. 3
C. 1 D. None of these
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58. An even number, total of whose digits is 27, is always divisible by
A. 14 B. 9
C. 7 D. None of these
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59. An even number, total of whose digits is 27, is always divisible by
A. 14 B. 9
C. 7 D. None of these
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60. What is the difference between the greatest and the smallest five digit numbers formed using the digits 7, 0, 3, 4 and 2 without repeating the digits?
A. 53978 B. 53916
C. 53961 D. None of these
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Related Topics

Profit and Loss
Ration and Proportion
Area
HCF & LCM
Coordinate Geometry
Time and Work



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