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Tuesday, 30 July 2013

Online Quantitative Aptitude Test On - Problems on H.C.F and L.C.M - Online Test Part - 4

Problems on H.C.F and L.C.M Online Test Part - 4

Exam Name - Quantitative Aptitude
Subject Name - Problems on H.C.F and L.C.M
Exam Type - Multiple Choice Questions
No Of Questions - 10

Question - 1: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
Show/Hide Answer
Answer = C - 23
Explanation: No Explanation
Question - 2: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 again at the starting point ? ?
  1. 26 minutes and 18 seconds
  2. 42 minutes and 36 seconds
  3. 45 minutes
  4. 46 minutes and 12 seconds
Show/Hide Answer
Answer = D - 46 minutes and 12 seconds
Explanation: No Explanation
Question - 3:Six bells commence tolling together and toll at the intervals of 2,4,6,8,10,12 seconds resp. In 60 minutes how many times they will toll together. ?
  1. 15
  2. 16
  3. 30
  4. 31
Show/Hide Answer
Answer = D - 31
Explanation: No Explanation
Question - 4:The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5
respectively, is: ?

  1. 123
  2. 127
  3. 235
  4. 305
Show/Hide Answer
Answer = B - 127
Explanation: No Explanation
Question - 5: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
Show/Hide Answer
Answer = B - 630
Explanation: No Explanation
Question - 6:The H.C.F of two numbers is 11 and their L.C.M is 7700. If one of the numbers is 275, then the other is ?
  1. 279
  2. 283
  3. 308
  4. 318
Show/Hide Answer
Answer = C - 308
Explanation: Other number = (11×7700 / 275)
= 308.
Question - 7:Three numbers which are co-prime to each other are such that the product of the first two is 551 and that of the last two is 1073. The sum of the three numbers is: ?
  1. 75
  2. 81
  3. 89
  4. 85
Show/Hide Answer
Answer = D - 85
Explanation: No Explanation
Question - 8:Three numbers are in the ratio 1 : 2 : 3 and their H.C.F is 12. The numbers are ?
  1. 4, 8, 12
  2. 5, 10,15
  3. 12, 24, 36
  4. 10, 20, 30
Show/Hide Answer
Answer = C - 12, 24, 36
Explanation: Let the required numbers be x, 2x and 3x.
Then, their H.C.F = x. So x = 12.
The numbers are 12, 24, 36.
Question - 9:The H.C.F. of 2923 and 3239 is : ?
  1. 37
  2. 47
  3. 73
  4. 79
Show/Hide Answer
Answer = D - 79
Explanation: No Explanation
Question - 10:Which of the following has the most number of divisors? ?
  1. 99
  2. 101
  3. 176
  4. 182
Show/Hide Answer
Answer = C - 176
Explanation: No Explanation

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