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# What is the tens digit of the sum of the forty numbers such

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Senior Manager
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What is the tens digit of the sum of the forty numbers such [#permalink]

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13 Jan 2005, 14:50
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

What is the tens digit of the sum of the forty numbers such that 1, 11, 111, 1111, ...?
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13 Jan 2005, 16:02
Units add up to 40
while tens will add up to 39 as the first digit hasno tens it will be

4+ 39 = 43

answer 3
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13 Jan 2005, 17:02
3 same logic as above.
13 Jan 2005, 17:02
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# What is the tens digit of the sum of the forty numbers such

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