Question 11 : Three number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is
1. 40
2. 80
3. 120
4. 200
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Question 12 : The product of two numbers is 4107. If the H.C.F. of these numbers is 37, then the greater number is:
1. 101
2. 107
3. 111
4. 185
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Question 13 : The greatest number of four digits which is divisible by 15, 25, 40 and 75 is:
1. 9000
2. 9400
3. 9600
4. 9800
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Question 14 : Let N be the greatest number that will divide 1305, 4665 and 6905, leaving the same remainder in each case. Then sum of the digits in N is:
1. 4
2. 5
3. 6
4. 8
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Question 15 : Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ?
1. 4
2. 10
3. 15
4. 16
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Question 16 : he H.C.F. of two numbers is 23 and the other two factors of their L.C.M. are 13 and 14. The larger of the two numbers is:
1. 276
2. 299
3. 322
4. 345
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Question 17 : Find the greatest number that will divide 43, 91 and 183 so as to leave the same remainder in each case.
1. 4
2. 7
3. 9
4. 13
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Question 18 : The least number which when divided by 5, 6 , 7 and 8 leaves a remainder 3, but when divided by 9 leaves no remainder, is:

1. 1677
2. 1683
3. 2523
4. 3363
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Question 19 : 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
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Question 20 : Find the lowest common multiple of 24, 36 and 40.

1. 120
2. 240
3. 360
4. 480
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