Question

14 21 ka lcm and hcf ka gudanfal​

Answer 1

Answer:

LCM = 42 and HCF = 7

Step-by-step explanation:

Prime factorisation of given number are

14 =     2     ×     7            

21 =     3     ×     7            

HCF  is product of common number , Here only 7 is common term shown in bold

       so HCF  = 7

again taking prime factorisation of given number are

14 =     2     ×     7            

21 =     3     ×     7  

LCM  is product of common number and all other number in  prime factorisation

NOTE at time of calculating LCM common number write only one time.

LCM = 2 × 3 × 7 =42