general math MCQ #2257

The product of two digits number is 2160 and their HCF is 12. The numbers are________?

general math MCQ #2257

  1. Question 1

    Q1. The product of two digits number is 2160 and their HCF is 12. The numbers are________?

    • A) (36,60)
    • B) -12180
    • C) (96,25)
    • D) (72,30)

    Answer: (36,60)

    Explanation: HCF=12, so numbers = 12a and 12b where a,b are co-prime. 144ab=2160 → ab=15. Co-prime pairs: (1,15) and (3,5). Only 2-digit pair is (36, 60).