Quantitative Apitude-Problems on Numbers
Quantitative Apitude-Problems on Numbers
31. The difference between a two-digit number and the number obtined by interchanging the digits is 27. What is the difference between the digits of the number ?
- 3
- 6
- 9
- 5
32. In a two-digit number , the sum of the digits is 15.if 9 is added to tthe number, the digits are reversed. the number is :
- 96
- 87
- 78
- 69
33. A certain number f two digits is three times the sum of its digits and if 45 be added to it, the digits arereversed. The number is:
- 23
- 27
- 32
- 72
34. Two numbers are such that the ratio between them is 4:7. If each is increased by 4, the ratio becomes 3:5. the larger number is :
- 36
- 48
- 56
- 64
35. The difference between the digits of a two - digit number is 4. What is the digit in unit's place ? To find out the answer, which of the informations given in the statements P and Q is/are sufficient. P: The difference between the number and the number obtained by interchanging the positions of the digits is 36.
Q:The sum of the digitsof that number is 12.
Q:The sum of the digitsof that number is 12.
- Only P is sufficient
- Only Q is sufficient
- Both P and Q are needed
- Either P and Q is sufficient
36. The denominator of a fraction is 3 more tha the numerator. If 4 is added to both the numertor and the denominator, the fraction becomes 4/5. the fraction is :
- 5/8
- 7/10
- 8/11
- 10/13
37. A fraction becomes 5/2 when 3 is added to both the numerator and the denominator and it becomes 4 when 1 is subtracted from both the numerator and denominator. The numerator of the given fraction is :
- 13
- 15
- 17
- 14
38. The sum of the numerator and denominator of a fraction is 11. If 1 is added to the numerator and 2 is subtrated from the denominator, it becomes 2/3. the fraction is :
- 5/6
- 6/5
- 3/8
- 8/3
39. The sum of the digits of a two-digit number is 9 less than the number which of the following digits is at unit place of the number ?
- 1
- 2
- 4
- Data inadequate
40. On dividing 50 into two parts such that the sum of their reciprocas is 1/12, we get the parts as :
- 20, 30
- 24, 26
- 28, 22
- 36, 14