Question

total number of 5 digit pallindrome????

Comments

Question is different and the answer is also different...

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This answer not for this question @Arjun Sir

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The question description was wrong -- removed now.

Answer 1

Answer should be 9*10*10 = 900. Out of the five digits, most significant three digits you can choose by your own and remaining two digits will be fixed, based upon the choices you made. Now first digit must be a non zero digit other wise the number will become a four digit number so, nine choices for the most significant digit, ten ten choices for second and third digits respectively, which will give 9*10*10 choices.

Answer 2

answer 900
there will be 5 blank spaces like this _ _ _ _ _
the first and last should be same so number of choices for first and lst digit is - 9(1-9) as zero will not be included because it will reduce it to 3 digit palindrom.
second last and second position will have 10 choices (0-9)

similarly middle digit will have a choice of (0-9) 10 choices so it will be

9*10*10=900