lcm-and-hcf

LCM and HCF

HCF and LCM: What is LCM? What is HCF? LCM full form, HCF full form, How to find LCM of two numbers, LCM of Fractions, HCF of Fractions, HCF and LCM problems

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Online Aptitude Questions with Answers on LCM and HCF

Q101. **What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30?**

  1.  196
  2.  630
  3.  1260
  4.  2520

Solution : 630
Q102. **The smallest fraction, which each of 6/7, 5/14, 10/21 will divide exactly is:**

  1.  30/7
  2.  30/98
  3.  60/147
  4.  50/294

Solution : 30/7
Q103. **The greatest number of four digits which is divisible by 15, 25, 40 and 75 is:**

  1.  9000
  2.  9400
  3.  9600
  4.  9800

Solution : 9600
Q104. **The least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 is:**

  1.  3
  2.  13
  3.  23
  4.  33

Solution : 23

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Q105. **A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they meet again at the starting point?**

  1.  26 min 18 sec
  2.  42 min 36 sec
  3.  45 min
  4.  46 min 12 sec

Solution : 46 min 12 sec
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