| 1. | Find the greatest number that will exactly divide 400 and 640. |
| a. | | 40100 |
| b. | | 80 |
| c. | | 20 |
| d. | | 100
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| 2. | Find the L.C.M. of 56,64? |
| a. | | 448 |
| b. | | 559 |
| c. | | 630 |
| d. | | 349
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| 3. | The H.C.F. of two numbers is 20 and L.C.M. is 23100. If one number is 700, find the other? |
| a. | | 520 |
| b. | | 660 |
| c. | | 740 |
| d. | | 550
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| 4. | The L.C.M. of two number is 420 and their ratio is 5:7. Find the sum of two numbers. |
| a. | | 115 |
| b. | | 126 |
| c. | | 144 |
| d. | | 162
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| 5. | The traffics lights at three different road crossings change after every 24 sec., 18sec., and 27sec., respectively. If all they change simaltineousaly at 4:10:00 hrs then they will change after simaltineousaly at |
| a. | | 7:36:00hrs. |
| b. | | 4:36:00hrs. |
| c. | | 4:13:36hrs. |
| d. | | 5:00:16hrs.
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| 6. | Find the least five digit number which on divided by 12, 18, 21, and 28 leaves the same remainder. |
| a. | | 11019 |
| b. | | 12089 |
| c. | | 10119 |
| d. | | 10059
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| 7. | Find the least digit number which when divided by 36, 162, and 729 leaves the same remainder 5. |
| a. | | 2916 |
| b. | | 2920 |
| c. | | 2522 |
| d. | | 2921
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| 8. | Find the least number which on adding 7 is exactly divisible by each of 15, 35 and 48. |
| a. | | 1663 |
| b. | | 1673 |
| c. | | 2093 |
| d. | | 1385
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| 9. | If the product of two numbers is 84942 and H.C.F. is 33, find their L.C.M.? |
| a. | | 2574 |
| b. | | 2250 |
| c. | | 3600 |
| d. | | 3450
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| 10. | The L.C.M. of two numbers is 45 times to their H.C.F. If one of the numbers is 125 and sum of L.C.M. and H.C.F. is 1150, find the other number? |
| a. | | 215 |
| b. | | 220 |
| c. | | 225 |
| d. | | 235
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| 11. | Find the least number which is exactly divisible by 26, 45, 60 and 80. |
| a. | | 1445 |
| b. | | 850 |
| c. | | 720 |
| d. | | 900
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| 12. | Find the least number which is exactly divisible by18, 15, 25 and 30. |
| a. | | 450 |
| b. | | 900 |
| c. | | 550 |
| d. | | 750
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| 13. | if the product of H.C.F and L.C.M of two numbers is 1000 and one number is 20 then find the other |
| a. | | 100 |
| b. | | 80 |
| c. | | 50 |
| d. | | 67
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