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If you had a set of ten cards numbered 0 to 9, could you make six numbers which are all multiples of three?

+1 vote
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If you had a set of ten cards numbered 0 to 9, could you make six numbers which are all multiples of three?
posted Jul 21, 2017 by anonymous

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2 Answers (Check Answer ▼)





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+1 vote

I am a set of three words, all with the same six letters.
First I am a kingdom, though not royally so.
Then spell me backwards, and I become a thin plate.
Now rearrange my consonants, leaving my vowels in place ...
I am now a type of paper.

What are the words?

+2 votes

There was an old woman who lived on a beach and the only food she had for her ten children was six potatoes. How did she make sure that each child had an equal share?

+1 vote

It can be easily calculated that the digits 0 to 9 can be arranged into 3628800 distinct ten-digit numbers.

But I also know how many of these numbers are prime.

Do you?

...