The highest common factor of 84 and 108 is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 12.
Prime factorization of 84 and 108:-
84 = 2 × 42 = 2 × 2 × 21 = 22 × 3 × 7
108 = 2 × 54 = 2 × 2 × 27 = 22 × 33
Hence HCF = 22 × 3 = 4 × 3 = 12