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A palindrome is a number, such as 93539, that reads the same
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02 Feb 2019, 02:54
02 Feb 2019, 02:54
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63% (01:07) correct
36% (01:25) wrong based on 57 sessions
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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?
Show: :: OA
90
Re: A palindrome is a number, such as 93539, that reads the same
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02 Feb 2019, 03:56
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.
General Discussion
Re: A palindrome is a number, such as 93539, that reads the same
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14 Mar 2023, 17:25
14 Mar 2023, 17:25
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