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There are no pairs of 2-digit numbers with a difference of 90 if both numbers are positive or both negative. However, with one positive and one negative, there are 71 pairs.
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Continue Learning about Math & Arithmetic
How many 4-digit numbers are palindromes?
There are 90 such numbers.
How many two digit numbers are there?
There are 90 two-digit numbers... starting with 10 and ending with 99.
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Related questions
How many 4-digit numbers are palindromes?
There are 90 such numbers.
How many two digit numbers are there?
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How many positive two digit numbers are there?
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How many palindromic 4 digit numbers are there?
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How many numbers are there in all having two digit 89 and 90?
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