number-system

Number System

Number System Questions: What is Number System in Maths? Divisibility Rules for 7, Divisibility Rules for 11, Binomial Theorem Questions, Factorize Expressions

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Online Aptitude Questions with Answers on Number System

Q226. The sum all even natural numbers between 1 and 31 is

  1.  16
  2.  128
  3.  240
  4.  512

Solution : 240
Q227. The difference between the place value and the face value of 6 in the numeral 856973 is

  1.  973
  2.  6973
  3.  5994
  4.  None of these

Solution : 5994

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Q228. If a and b are odd numbers, then which of the following is even ?

  1.  a + b
  2.  a + b + 1
  3.  ab
  4.  ab + 2
  5.  None of these

Solution : a + b
Q229. Which one of the following numbers is completely divisible by 99?

  1.  3572404
  2.  135792
  3.  913464
  4.  114345
  5.  None of these

Solution : 114345

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Q230. The sum of how many terms of the series 6 + 12 + 18 + 24 + ... is 1800 ?

  1.  16
  2.  24
  3.  20
  4.  18
  5.  22

Solution : 24
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