Question

UMUIDIC DY 10, 3b,
Revision Exercise (Chapter 8)
1. Find the H.C.F. of : 0) 108, 288 and 420
(ii) 36, 54 and 138
2. Find the L.C.M. of : (i) 72, 80 and 252
(ii) 48, 66 and 120
3. State true or false (Give an example in support of your answer in each case):
(i) H.C.F. of two prime numbers is 1.
(ii) H.C.F. of two co-prime numbers is 1.
(iii) L.C.M. of two prime numbers is equal to their product.
(iv) L.C.M. of two co-prime numbers is equal to their product.
4. The product of two numbers is 12096 and their H.C.F. is 36. Find their L.C.M.
5. The product of the H.C.F. and the L.C.M. of two numbers is 1152. If one number is 48, find
the other one.
6. (i) Find the smallest number that is completely divisible by 28 and 42.
(ii) Find the largest number that can divide 28 and 42 completely.
7. Find the L.C.M. of 140 and 168. Use the L.C.M. obtained to find the H.C.F. of the giver
numbers.
8. Find the H.C.F. of 108 and 450 and use the H.C.F. obtained to find the L.C.M. of the give
numbers.​

Answer 1

Answer:

this question is so long