| 1. | Find the least digit number which when divided by 72, 96, and 128 leaves the remainder 50, 74 and 106 respectively. |
| a. | | 1130 |
| b. | | 1152 |
| c. | | 1080 |
| d. | | 1522
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| 2. | Find the greatest number which will divide 515 and 11667 so as to leave the remainder 5 in each case. |
| a. | | 51 |
| b. | | 34 |
| c. | | 39 |
| d. | | 65
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| 3. | Find the L.C.M. of 9/10, 12/25, 18/35, 21/40. |
| a. | | 5/252 |
| b. | | 3/1400 |
| c. | | 252/5 |
| d. | | 1400/3
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| 4. | Find the L.C.M. of 4.5, 1.8, and 6.3. |
| a. | | 630 |
| b. | | 6.30 |
| c. | | 63.0 |
| d. | | 0.630
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| 5. | 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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| 6. | 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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| 7. | 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. | | 4:36:10hrs. |
| d. | | 5:00:16hrs.
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| 8. | A wholesale sugar delar has 780kilogram, 1650kilogram and 510kilogram sugar of three different qualities. He has to pack it all into boxes of equal size without mixing. Find the capacity of the largest possible box. |
| a. | | 15 |
| b. | | 30 |
| c. | | 25 |
| d. | | 12
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| 9. | Find the greatest number that will exactly divide 1215 and 2025. |
| a. | | 360 |
| b. | | 405 |
| c. | | 375 |
| d. | | 480
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| 10. | What is the smallest number which is exactly divisible by 18, 54, 90 and 189? |
| a. | | 3560 |
| b. | | 3780 |
| c. | | 4200 |
| d. | | 4520
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| 11. | 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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| 12. | The H.C.F. of two numbers of 3 digits is 310 and their L.C.M. is 1860. Find the numbers? |
| a. | | 310, 1860 |
| b. | | 620, 930 |
| c. | | 620, 310 |
| d. | | 930, 310
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