How many 4 digit numbers can be formulated with digits 0, 1, 2, 3, 4, 5, and 6…
2025
How many 4 digit numbers can be formulated with digits 0, 1, 2, 3, 4, 5, and 6 which are divisible by 5?
- A.
250
- B.
220
- C.
320
- D.
200
Attempted by 7 students.
Show answer & explanation
Correct answer: B
In the condition of divisibility by 5, the unit’s digit needs to be 0 or 5.
When the unit’s digit is 5 the numbers possible are
= 5 x 5 x 4= 100
When the unit’s digit is 0 the numbers possible are
= 6 x 5 x 4= 120
Total Possibility = 100 +120 = 220