 # Quantitative Aptitude Objective Questions { Problems on Numbers }

64. The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers ?

65. The sum of the digits of a two-digit number is 1/5 of the difference between the number and the number obtained by interchanging the positions of the digits. What is definitely the difference between the digits of that number ?

66. If the digit in the unit?s place of a two-digit number is halved and the digit in the ten?s place is doubled, the number thus obtained is equal to the number obtained by interchanging the digits. Which of the following is definitely true ?

67.  If the number obtained on interchaging the ?digits of a two-digit number is? 18 more than the original, number and the sum of the digits is 8, then, what is the?original number ?

68. The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number 1 :2 ?

69. A number consists of 3 digits whose sum is 10. The middle digit is equal to the sum of the other two and the number will be ircreased by 99 if its digits are reversed. The number is :

70. A two-digit number become five-sixth of itself when its digits are reversed. The two digits differ by one. The number is :

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