| 1. | What is the smallest number which is exactly divisible by 24, 12, 60 and 56? |
| a. | | 420 |
| b. | | 840 |
| c. | | 1200 |
| d. | | 780
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| 2. | 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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| 3. | 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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| 4. | In a school, distribute the 3003 pens and 2730 copies among the maximum number of students in such a way that each student get the same number of pens and copies: |
| a. | | 91 |
| b. | | 182 |
| c. | | 143 |
| d. | | 173
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| 5. | The H.C.F. of two numbers is 210 and their ratio is 15:22. Find the numbers? |
| a. | | 3150, 4620 |
| b. | | 2250, 3890 |
| c. | | 1820, 2600 |
| d. | | 4500, 2150
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| 6. | There are three iron pipes length of 77m, 91m and 119m have to be divided into pieces of same length. What is the greatest possible length of each piece? |
| a. | | 11m |
| b. | | 13m |
| c. | | 17m |
| d. | | 7m
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| 7. | Find the greatest number that will exactly divide 1215 and 2025. |
| a. | | 360 |
| b. | | 405 |
| c. | | 375 |
| d. | | 480
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| 8. | 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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| 9. | Find the greatest number of four digits which is exactly divisible by each of 12, 18, 40 and 45. |
| a. | | 9550 |
| b. | | 9720 |
| c. | | 8500 |
| d. | | 8650
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| 10. | Which of the following pairs of numbers is not co-prime? |
| a. | | 15, 98 |
| b. | | 198, 429 |
| c. | | 847, 2160
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| 11. | The H.C.F. and L.C.M. of two numbers are 12 and 5040 respectively. If one of the numbers is 144, find the other number? |
| a. | | 420 |
| b. | | 425 |
| c. | | 465 |
| d. | | 412
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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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