find HCF of 30, 50 ,70 using prime factorisation method
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3
Answer:
Greatest common factor (GCF) of 30 and 50 is 10.
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Step-by-step explanation:
Calculate Greatest Common Factor for :
30, 50 and 70
Factorize of the above numbers :
30 = 2 • 3 • 5
50 = 2 • 52
70 = 2 • 5 • 7
Build a prime factors table
Number of times each prime factor
appears in the factorization of :
Prime
Factor Number
30 Number
50 Number
70 G.C.F
(min)
2 1 1 1 1
3 1 0 0 0
5 1 2 1 1
7 0 0 1 0
GCF = 2 • 5
Greatest Common Factor is :
10
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