哪儿 is indeed slightly less formal. Another difference is that it's a speech habit in Beijing and other Northern parts of China. However, 哪里 and 哪儿 are both commonly used.
Jenny
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jennyzhu
April 27, 2010, 01:39 AMHi Kyle,
哪儿 is indeed slightly less formal. Another difference is that it's a speech habit in Beijing and other Northern parts of China. However, 哪里 and 哪儿 are both commonly used.
Jenny