Which number is the highest common factor of 36, 66 and 126?
- 6
- 12
- 23
Explanation from PART66Online
The highest common factor is the largest number dividing all three. Factorising: 36 = 2^2*3^2, 66 = 2*3*11, 126 = 2*3^2*7. The shared prime factors are one 2 and one 3, so the highest common factor is 2*3 = 6. Neither 12 nor 23 divides all three numbers.
M
mowhar asked · 27 Nov 2014
6 is highest common factor, lowest common factor 2772
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