There are 90 such numbers.
http://wiki.answers.com/Q/How_many_4digit_numbers...

Among the 900 5 digit palindromes, 93 are prime. Among the 9000.
http://www.chacha.com/question/howmany5digitpa...

Its a trivial problem, honestly. The answer is 10P4 = 5040. Since only the first four digits of the seven digit number matter. The remaining (last) three are reflections of what the
http://answers.yahoo.com/question/index?qid=201210...

Permutations . . . (4 x 3 x 2 x 1) = 24 of them. Combonations . . . only 1 of them.
http://wiki.answers.com/Q/How_many_4_digit_combona...
