Question

Find the HCF and LCM by using the property given in Question no 1 117,221

Answer 1

Answer: HCF OF ( 117 , 221 ) is 13  

LCM OF ( 117 , 221 ) IS 1989

Step-by-step explanation: The HCF of 117 and 221 is 13.

Steps to find HCF

Find the prime factorization of 117

117 = 3 × 3 × 13

Find the prime factorization of 221

221 = 13 × 17

To find the HCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 13

Find the prime factorization of 117

117 = 3 × 3 × 13

Find the prime factorization of 221

221 = 13 × 17

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

LCM = 3 × 3 × 13 × 17

LCM = 1989

Answer 2

Answer:

13 and 1989 is the HCF and LCM.

Step-by-step explanation:

117=3×3×13

221=13×17

HCF=13

LCM=1989