Question

3.
(b) 16, 12, 18
Find the LCM by common division method.
(a 12, 15, 45
(b) 24, 90, 48
(CY 30, 24, 36, 16
(d) 16, 48, 64
(e) 35, 49, 91
(1) 20, 25, 30
(g) 12, 16, 24, 36
(5) 40, 48, 45​

Answer 1

Answer:

a.

12,15,45 |5

12,3,9. |3

4,1,3|

LCM=5*3*4*3=180

b.

24,90,48 |2

12,45,24 |3

4,15,8. |5,2

2,3,4. |2

1,3,2

LCM=2*3*5*2*2*2*3=720

c.

30,24,36,16 |2

15,12,18,8 |3

5,4,6,8 |5,2

1,2,3,4. |2

1,1,3,2

LCM=2*3*5*2*2*2*3=720

d.

16,48,64 |2

8,24,32 |2

4,12,16 |2

2,6,8 |2

1,3,4

LCM=2*2*2*2*2*2*3=192

e.

35,49,91 |13,7

5,7,7. |

LCM=13*7*7*7*5=22295

f.

20,25,30 |5

4,5,6 |3,2

2,5,2

LCM=5*3*2*5*2=300

g.

12,16,24,36|2

6,8,12,18. |3

2,8,4,6 |2

1,4,2,3. |2,3

1,2,1,1

LCM=2*3*2*2*3*2=144

h.

40,48,45 |2

20,24,45 |5

4,24,9. |3

4,8,3. |2

2,4,3 |2

1,2,3

LCM=2*3*5*2*2*2*3=720

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Answer 2

Answer:

a. 180

b.720

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