41. The H.C.F of 24 × 32 × 53 × 7, 23 × 33 × 52 × 72 and 3 × 5 × 7 × 11 is = ?
42. The H.C.F of 4 × 27 × 3125, 8 × 9 × 25 × 7 and 16 × 81 × 5 × 11 × 49 is = ?
43. Even numbers are formed by talking at least two at a time from the numbers 0, 4, 8, 9. Their H.C.F. is = ?
44. Find the largest number of four digits such that on dividing by 15, 18, 21 and 24 the remainders are 11, 14, 17 and 20 respectively.
45. The greatest number which when divides 989 and 1327 leave remainder 5 and 7 respectively = ?
46. A milkman has 75 litres milk in one cane and 45 litres in another. The maximum capacity of container which can measure milk of either container exact number ?
47. Which of the following is a pair of co-primes ?
48. The L.C.M. of 22, 54, 108, 135 and 198 is = ?
49. Two numbers are in the ratio 3 : 4, if their H.C.F. is 4, then their L.C.M. = ?
50. L.C.M. of two numbers is 2079 and their H.C.F. is 27. If one of the number is 189, the other number is = ?
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