using prime factorization method find the HCF and LCM of 21,28,36,45
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Answered by
5
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By Prime Factorisation Method
=> 21 = 3 x 7
=> 28 = 2² x 7
=> 36 = 2² x 3²
=> 45 = 5 x 3²
Thus HCF = Since nothing is common
=> HCF = 1
Similarly LCM = 2² x 3² x 5 x 7
=> LCM = 4 x 9 x 5 x 7
=> LCM = 36 x 35
=> LCM = 1260
___________
Hope this helps ✌️
Good Afternoon
__________
By Prime Factorisation Method
=> 21 = 3 x 7
=> 28 = 2² x 7
=> 36 = 2² x 3²
=> 45 = 5 x 3²
Thus HCF = Since nothing is common
=> HCF = 1
Similarly LCM = 2² x 3² x 5 x 7
=> LCM = 4 x 9 x 5 x 7
=> LCM = 36 x 35
=> LCM = 1260
___________
Hope this helps ✌️
Answered by
3
hope it's help you.......
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