1) Which of the following fractions is the largest? a. 7/8 b. 13/16 c. 31/40 d. 63/80
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2) 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___________? a. 276 b. 299 c. 322 d. 345
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3) The H.C.F of two numbers is 8. Which of the following can never be their L.C.M? a. 24 b. 48 c. 56 d. 60
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4) Product of two co-prime numbers is 117. Their L.C.M should be__________? a. 1 b. 117 c. equal to their H.C.F d. Cannot be calculated
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5) If the sum of two numbers is 55 and the H.C.F and L.C.M of these numbers are 5 and 120 respectively, then the sum of the reciprocal of the numbers is equal to___________? a. 55/601 b. 601/55 c. 11/120 d. 120/11
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6) The L.C.M of two numbers is 495 and their H.C.F is 5. If the sum of the numbers is 10, then their difference is__________? a. 10 b. 46 c. 70 d. 90
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7) The H.C.F of two numbers is 11 and their L.C.M is 7700. If one of the numbers is 275, then the other is__________? a. 279 b. 283 c. 308 d. 318
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8) The H.C.F and L.C.M of two numbers are 84 and 21 respectively. If the ratio of the two numbers is 1:4, then the larger of the two numbers is____________? a. 12 b. 48 c. 84 d. 108
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9) Three numbers are in the ratio 3:4:5 and their L.C.M is 2400. Their H.C.F is: a. 40 b. 80 c. 120 d. 200
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10) The L.C.M of two numbers is 48. The numbers are in the ratio 2:3. The sum of numbers is__________? a. 28 b. 32 c. 40 d. 64
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