Quantitative Aptitude - Problems on Numbers

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Question - 1

The different between a number and its three-fifth is 50.What is the number?

  • A 75
  • B 100
  • C 125
  • D None of these

Question - 2

If a number decreased by 4 and divided by 6,the result is 8.What would be the result if 2 is subtracted from the number and then it is divided and then it is divided by 5?

  • A \(9{2\over3}\)
  • B 10
  • C \(10{1\over5}\)
  • D \(11{1\over5}\)
  • E None of these

Question - 3

If one-third of one-fourth of a number is 15,then three-tenth of that number is:

  • A 35
  • B 36
  • C 45
  • D 54

Question - 4

A number is doubled and 9 is added.If the resultant is trebled,it becomes 75.What is that number? 

  • A 3.5
  • B 6
  • C 8
  • D 8
  • E None of these

Question - 5

Three-fourth of a number is 60 more than its one-third.The number is:

  • A 84
  • B 108
  • C 144
  • D None of these

Question - 6

When 24 is subtracted from a number,it reduces to its four-seventh.What is the sum of the digits of that number?

  • A 1
  • B 9
  • C 11
  • D Data inadequate
  • E None of these

Question - 7

Find the number which when multiplied by 15 is increased by 196.

  • A 14
  • B 20
  • C 26
  • D 28

Question - 8

If a number,when divided by 4,is reduced by 21,the number is:

  • A 18
  • B 20
  • C 28
  • D 38

Question - 9

A number whose fifth part increased by 4 is equal to its fourth part diminished 10,is:

  • A 240
  • B 260
  • C 270
  • D 280

Question - 10

The difference of two numbers is 20% of the larger number.If the smaller number is12,the larger one is:

  • A 15
  • B 16
  • C 18
  • D 20