Multiple choice

How many 3 digit numbers can be formed with 4, 9 and 2 if the digits are never repeated?

  1. 4

  2. 6

  3. 8

  4. 7
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

To form 3-digit numbers using 4, 9, and 2 without repetition, we calculate the permutations of 3 distinct items. This is 3! (3 factorial), which equals 3 * 2 * 1 = 6.

AI explanation

We need to form a 3-digit number using 3 distinct digits, which is an arrangement of all 3 items. The number of possible permutations is calculated using 3 factorial. Calculating 3 times 2 times 1 gives 6 possible numbers.

Keep practicing — related questions