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

Q101. **If the L.C.M of two numbers is 750 and their product is 18750, find the H.C.F of the numbers.**

  1.  50
  2.  30
  3.  125
  4.  25
  5.  None of these

Solution : 25
Q102. **Find the smallest four-digit number which is a multiple of 112.**

  1.  896
  2.  1008
  3.  1120
  4.  1024
  5.  None of these

Solution : 1008

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Q103. **A gardener wants to plant trees in his garden in such a way that the number of trees in each row should be the same. If there are 4 rows or 5 rows or 6 rows, then no tree will be left. Find the least number of trees required.**

  1.  30
  2.  60
  3.  120
  4.  240
  5.  None of these

Solution : 60
Q104. **Find the least number which when divided by 35 and 11 leaves a remainder of 1 in each case.**

  1.  384
  2.  391
  3.  388
  4.  397
  5.  386

Solution : 386

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Q105. **Find the smallest number which when divided by 13 and 16 leaves respective remainders of 2 and 5.**

  1.  187
  2.  197
  3.  207
  4.  219
  5.  None of these

Solution : 197
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