If you are talking of 20 and 24 then factor both to prime factors.
20=2x2x5
24=2x2x2x3
circle the common ones. 2x2=4
the greatest common factor.
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√2024 = 44.98888751
January 1 2024 will be a Monday.
Anyone born in 1968 would celebrate their 56th birthday in 2024
The HCF is 1.
The HCF is: 2