Posted by MILDRED on Tuesday, September 8, 2009 at 9:10pm.
Could you please check my answer?
Daniel played a cards game in which each
loss meant that he had to give the other player half the cards he had left. He lost four times, one after the other, and then had 3 cards left.
How many cards did he have when he started?
ANSWER: 72

MATHS  MathMate, Tuesday, September 8, 2009 at 9:14pm
Sorry, 72 is not correct.
Look at it this way:
He now has 3 cards left.
Before he lost the fourth time, he had 2*3=6 cards.
Before he lost the third time, he had 2*6=12 cards.
Before....
Can you finish it?

MATHS  MILDRED, Tuesday, September 8, 2009 at 9:19pm
So the answer should be 48?

MATHS  MathMate, Tuesday, September 8, 2009 at 10:54pm
Correct!
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