Question

LCM of 20,56,78,90 in process​

Answer 1

Answer:

20,56,78,90

2/10,28,39,45

2/5,14,39,45

3/5,14,39,45

5/5,14,13,15

1,14,13,3

Therefore,The lcm of 20,56,78,90 is 32,760

Answer 2

Answer:

factors of 20 = 1,2,4,5,10,20

1×20

2×10

4×5

factors of 56= 1,2,4,7,8,14,28,56

1×56

2×28

4×14

7×8

factors of 78= 1,2,3,6,13,26,39,78

1×78

2×39

3×26

6×13

factors of 90 = 1,2,3,5,6,9,10,15,18,30,45,90

1×90

2×45

3×30

5×18

6× 15

9×10

common factors= 1,2,

LCM = 1