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

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



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



3. 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 .heir difference is:



4. The L.C.M. of three different numbers is 120. Which of the -Allowing cannot be their



5. H.C.F. of 4 x 27 x 3125, 8 x 9 x 25 x 7 & 16 x 81 x 5 x 11 x 49 is 



6. The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is:



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



8. A number π is said to be perfect if the sum of all its divisors (excluding n itself is equal to n. An example of perfect number is



9. The H.C.E and L.C.M. of two numbers are 50 and 250 respectively If the first number is divided by 2, the quotient is 50. The second number is:



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



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

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