engineering mathematics MCQ #3991

How many 4-digit numbers can be formed using digits 1, 2, 3, 4, 5 without repetition?

engineering mathematics MCQ #3991

  1. Question 1

    Q1. How many 4-digit numbers can be formed using digits 1, 2, 3, 4, 5 without repetition?

    • A) 120
    • B) 60
    • C) 24
    • D) 1200

    Answer: 120

    Explanation: Using permutation formula for 5 digits taken 4 at a time, P(5,4) = 5! / (5-4)! = 120.