Practice Test -H.C.F. and L.C.M of Numbers

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1. Find the lowest common multiple of 24, 36 and 40 



2. The L.C.M. of 23 x 32 x 5 x 11, 24x 34 x 52 x 7 and 25 x 33 x 53 x 72 x 11 is:



3. Three numbers which are co-prime to each other are such that the product of the first two is 551 and that of the last two is 1073. The sum of the three numbers is:



4. The product of two numbers is 4107. If the H.O.F. of these numbers is 37, then the greater number is:



5. There numbers are in the ratio 1: 2: 3 and their H.C.F. is 12. The numbers are:



6. The H.C.F. of 204, 1190 and 1445 is 



7. The product of the L.C.M. and H.C.F. of two numbers is 24. The difference of two numbers is 9. Find the numbers.



8. Product of two co-prime numbers is 117. Their L.C.M. should be:



9. 252 can be expressed as a product of primes as:



10. Three numbers are in the ratio of 3: 4: 5 and their L.C.M. is 2400. Their H.C.F. is:



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H.C.F. and L.C.M of Numbers

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