Question

pls answer all the questions and I will follow and mark brainly ​

Answer 1

Answer:

1) hcf of any prime numbers are 1

2) we know that hcf × lcm = product of the number therefore 3× lcm = 180

lcm=180÷3

lcm=60

3) it will terminate after 4 decimal places

4) we know that composite number have maore than 2 factors 17×5×11×3×2+2×11

11(17×5×3×2+2)

11×512

5) using prime factorisation method to find lcm of 42 and 72

42-2×3×7

72-2×2×2×3×3

$lcm = {2} ^{3} \times {3}^{2} \times 7 = 504$

11×256×2