Question

1. Find the HCF.
(i) 25, 40
(v) 18, 32, 48
plz say me the answer fast i want it​

Answer 1

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1)Prime Factorization of 25

Prime factors of 25 are 5. Prime factorization of 25 in exponential form is:

25 = 52

Prime Factorization of 40

Prime factors of 40 are 2, 5. Prime factorization of 40 in exponential form is:

40 = 23 × 51

Factors of 25

List of positive integer factors of 25 that divides 25 without a remainder.

1, 5

Factors of 40

List of positive integer factors of 40 that divides 25 without a remainder.

1, 2, 4, 5, 8, 10, 20

Greatest Common Factor

We found the factors and prime factorization of 25 and 40. The biggest common factor number is the GCF number.

So the greatest common factor 25 and 40 is 5.

2)Prime Factorization of 18

Prime factors of 18 are 2, 3. Prime factorization of 18 in exponential form is:

18 = 21 × 32

Prime Factorization of 48

Prime factors of 48 are 2, 3. Prime factorization of 48 in exponential form is:

48 = 24 × 31

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1, 2, 3, 6, 9

Factors of 48

List of positive integer factors of 48 that divides 18 without a remainder.

1, 2, 3, 4, 6, 8, 12, 16, 24

Greatest Common Factor

We found the factors and prime factorization of 18 and 48. The biggest common factor number is the GCF number.

So the greatest common factor 18 and 48 is 6.

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In short the answer is:-

1) The hcf of 25 and 40 is 5

2)The hcf of 18, 32 and 48 is 6

Answer 2

Answer:-

the hcf of 25 and 40 is 5

the hcf of 18,32 and 48 is 6

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