Sum of all two digit numbers which when divided by 4 yield unity as remainder is.

Explanation

The two-digit numbers, which when divided by `4`, yield `1` as remainder, are,


`13, 17, … 97`.


This series forms an A.P. with first term, `a = 13` and common difference, `d =4`.


Let `n` be the number of terms of the A.P.


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