Question

2. Find HCF of:
B. 15 and 25
a.20 and 28.​

Answer 1

Explanation:

B.. therefore, the HCF of 15 and 25 is 5..

A... we found the factors and prime factorization

of 20 and 28. the biggest common factor number is the GCF number. show the greatest common factor of 20 and 28 is 4

Answer 2

Answer:

B) HCF of 15 and 25 is 5

A) HCF of 20 and 28 is 4

How? (Solution below⬇)

Explanation:

B) Hcf of 15 and 25:

(You can use Prime Factorisation Method for Factors)

Hence, Factors of 15=3×5

Factors of 25=5×5 So, we see the common Factor is 5 in both 15 & 25.

Hence, hcf of 15 and 25 is 5.

A) HCF of 20 and 28

(Prime Factorisation method)

Factors of 20= 2×2×5

Factors of 28=2×2×7

Hence, we see 2×2 is common is both the cases,

So, 2×2 i.e 4 is the HCF of 20 & 28.

Read Thoroughly to understand..Hope it helped you..☺