Mathematics

Problem

The number of terms of an A.P. is even; the sum of all the odd terms is 24, the sum of all the even terms is 30 and the last term exceeds the first by

\frac{21}{2}

. Then the number of terms which are integers in the A.P. is: (a) 4 (b) 10 (c) 6 (d) 8

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