Question 21 : The least multiple of 7, which leaves a remainder of 4, when divided by 6, 9, 15 and 18 is:

1. 74
2. 94
3. 184
4. 364
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Question 22 : The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is:

1. 1
2. 2
3. 3
4. 4
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Question 23 : The G.C.D. of 1.08, 0.36 and 0.9 is:

1. 0.03
2. 0.9
3. 0.18
4. 0.108
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Question 24 : 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 25 : 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 26 : 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 27 : 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 28 : 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 29 : The 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 30 : 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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