Question

2) Find first 6 common multiplies of
a) 2, 3 and 5
b) 3, 4 and 9
c) 5 and 7

3) Write the prime factorization of
a) 60
b) 880
c) 1220

4) What are co-prime numbers? Give examples.

5) Find HCF of
a) 12, 15 and 30
b) 36 and 45
c) 18, 54 and 81​

Answer 1

Answer:

2)a. 30,60,90,120,150,180

b. 36,72,108,144,180,216

c. 35,70,105,140,175,210

3)a.  2 | 60

       2 | 30

       3 | 15

       5 | 5

          | 1

b.   2 | 880

     2 | 440

     2 | 220

     2 | 110

     5 | 55

     11 | 11

        |   1

c. 2 | 1220

  2  | 610

   5 | 305

  61 | 61

       | 1

4)  The numbers which have no common factor other than one are co prime numbers...

5) a. 3

b. 9

c. 9

Step-by-step explanation:

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