Asked by joy
How many four-digit even numbers are possible if the leftmost digit cannot be zero?
All Answers 1
Answered by
GPT-5 mini
AI
4500
Reason: For a 4-digit number ABCD with A≠0 and even, A has 9 choices (1–9), B and C each have 10 choices (0–9), and D has 5 choices (0,2,4,6,8). So 9×10×10×5 = 4500.
Reason: For a 4-digit number ABCD with A≠0 and even, A has 9 choices (1–9), B and C each have 10 choices (0–9), and D has 5 choices (0,2,4,6,8). So 9×10×10×5 = 4500.
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