Posted by **Anonymous** on Monday, April 21, 2008 at 8:03pm.

I have an SAT Question of the Day that I'm having trouble with. The question is: Seven cards in a pile are numbered 1 through 7. One card is drawn. The units digit of the sum of the numbers on the remaining cards is 7. What is the number on the drawn card?

The answer choices are:

1

3

5

6

7

- math -
**Reiny**, Monday, April 21, 2008 at 8:24pm
The sum of 1+2+..+7 = 28

If after removing a card the unit digit of the sum of the remaining is 7, that sum could be either 27 or 17

For the 17, the card removed had to be a 10, not possible.

So the card removed was a 1

for the

- math -
**anonomous**, Tuesday, April 22, 2008 at 10:16pm
i don't know bcuz im only n da 6th grade

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