Question

find the first 3 common multiples and the lcm of each pair number 2,4,6,8,10 and 4,8,12,16,20

Answer 1

Answer:

I. Find the common multiple of:

(i) 3 and 4

3 = 3, 6, 9, 12, 15, 18, 21, 24, 27, 30 ………….

4 = 4, 8, 12, 16, 20, 24, 28, 32, 36, 40 ………….

The common multiples of 3 and 4 are 12, 24, 36 ………….

(ii) 2 and 3

2 =

3 =

The common multiples of 2 and 3 are __________

(iii) 4 and 6

4 =

6 =

The common multiples of 4 and 6 are __________

(iv) 5 and 10

5 =

10 =

The common multiples of 5 and 10 are __________

(v) 7 and 8

7 =

8 =

The common multiples of 7 and 8 are __________

Answers:

I. (ii) 6, 12, 18, ……….

(iii) 12, 24, 36, ………..

(iv) 10, 20, 30, …………

(v) 56, 112, ………….

Answer 2

Answer:

240 first pair

Step-by-step explanation:

2|2,4,6,8,10

2|1,2,3,4,5

2|1,1,3,2,5

2|1,1,3,1,5

3|1,1,1,1,5

5|1,1,1,1

|1,1,1,1