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Alborosie
2 years ago
6

Best answer will be BRAINLIEST!!!!!!

Mathematics
1 answer:
vekshin12 years ago
3 0

Answer:

252

Step-by-step explanation:

The number of integers from 100 to 999 is 999 - 100 +1 = 900.

Consider the number of three-digit integers that <em>do not contain 4 </em>as a digit.

For the <em>hundreds</em> digit, there are 8 possible choices (excluding 0 and 4).

For the <em>tens digit</em>, there are 9 possible choices (excluding 4).

For the <em>ones</em> <em>digit,</em> there are 9 possible choices (excluding 4)

Thus, there are 8 × 9 × 9 = 648 three-digit integers without a 4.

The number of three-digit integers with at least one 4 is 900 - 648 = 252.

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