1. Find the LCM of the following numbers
by prime factorization method:
(i) 16, 24
(iii) 72, 90, 108
(v) 22, 121, 418
(ii) 36,48,84
(iv) 7 ,11, 13
(vi) 14, 28, 35,56
of the following numbers
Answers
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i.16 24
2(16) 2(12)
2(8) 2(6)
2(4) 3(3)
2(2) 1
1
ii.72 90 108
2(36) 3(30) 2(54)
2(18) 3(10) 3(27)
3(9) 5(5) 3 ( 9)
3(3) 1 3(3)
1 1
v.22 121 418
2(22) 11(121) 2(418)
11 (1 1) 11(11) 11(209)
1 1 19(19)
1
ii.36 48 84
3(12) 2(24) 2(42)
2(4) 2(12) 7(21)
2(2) . 2(6) 3( 3)
1 3(3) 1
1
iv.7 11 13
7(7) 11(11) 13(13)
1 1 1
vi.14 28 35 56
7(14) 7(28) 7(35) 2(56)
2(2) 2 (4) 5(5) 2(28)
1 2(2) 1 7 (14)
1 2(2)
1