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Question
I counted one rat and kept one 
card in my pocket.
for one rat.
When I had 10 cards, I changed it with this card 
in my pocket.
Which cards will he have in his pocket if he has counted up to
23
Options
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Solution
23 ⇒ 
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Simple! I used these cards. I counted one rat and kept one card in my pocket.
for one rat.
for Two rats.
for How many rats?
I counted one rat and kept one card in my pocket.
for one rat.
When I had 10 cards, I changed it with this card in my pocket.
Which cards will he have in his pocket if he has counted up to
47
