All even?
Probability
Level
2
How many five digit numbers (10000 to 99999) have all even digits?
The answer is 2500.
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The first digit has only 4 values (2,4,6,8)
All other digits have 5 values (0,2,4,6,8)
Numbers that have even digits = 4 × 5 4 = 2 5 0 0