how can we find the hcf and lcm of 16and20by using prime factorisation
Answers
Answered by
2
At first find the prime factors of 16 - 2*2*2*2or 2^4
then find prime factors of 20- 2*2*5 or 2^2*5
to find the hcf the formula is - the lest power of the common factors=2^2=4 so the hcf of 16 and 20 is 4.
Now to find the lcm the formula is - highest powers of the common factors *remain factors=2^4*5=80
then find prime factors of 20- 2*2*5 or 2^2*5
to find the hcf the formula is - the lest power of the common factors=2^2=4 so the hcf of 16 and 20 is 4.
Now to find the lcm the formula is - highest powers of the common factors *remain factors=2^4*5=80
soetlana:
u r welcome\
Similar questions