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A palindrome is a number, such as 93539, that reads the same

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A palindrome is a number, such as 93539, that reads the same [#permalink] New post   02 Feb 2019, 02:54
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A palindrome is a number, such as 93539, that reads the same forward and backward. How many palindromes are there between 100 and 1,000?

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90
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Re: A palindrome is a number, such as 93539, that reads the same [#permalink] New post   02 Feb 2019, 03:56
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Carcass wrote:
A palindrome is a number, such as 93539, that reads the same forward and backward. How many palindromes are there between 100 and 1,000?

Show: :: OA
90


Explanation::

It is required to find the palindromes between 100 to 1000

Hence the first digit can be chosen in 9 ways from 1,2,3,4,5,6,7,8 and 9

The second digit can be chosen in 10 ways, from the set 0,1,2,3,4,5,6,7,8,9

but the third digit has to be the same as the 1st digit, so there is only 1 possibility.

total palindromes=9*10*1 = 90.
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Re: A palindrome is a number, such as 93539, that reads the same [#permalink] New post   03 Nov 2025, 21:38
Hello from the GRE Prep Club BumpBot!

Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: A palindrome is a number, such as 93539, that reads the same [#permalink]
03 Nov 2025, 21:38
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