Question

Find L.C.M of i) 12 and 18, ii) 12, 15 and 21.​

Answer 1

Answer:

Find the prime factorization of 12

12 = 2 × 2 × 3

Find the prime factorization of 18

18 = 2 × 3 × 3

Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:

LCM = 2 × 2 × 3 × 3

LCM = 36

Answer 2

Answer

2/12. 18

2/6. 9

2/3.9

3/1.3

3/1.1

2×2×2×3×3=24×3=72

2/12. 15. 21

2/6. 15. 21

2/3. 15. 21

3/1. 5. 7

5/1. 1. 7

7/1. 1. 1

2×2×2×3×5×7=24×5=120×7=840

all questions same try ok dear