How many positive three-digit integers have the hundreds digit equal to 3 and the units digit (ones digit) equal to 4 ? (A) 10 (B) 19 (C) 20 (D) 190 (E) 200

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Choice A Level of Difficulty E M H Three digit numbers that can have a 3 in the hundreds place range from 300 to 399. If we require a 4 in the units place, we can have 304, 314, 324, ... 394. It's simple to count them, which gives 10 numbers, or choice A.

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