Between and , exactly arithmetic means are inserted. If the fifth mean is ,…

MATHEMATICS · Multi-part · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

Between

7

and

31

, exactly

n

arithmetic means are inserted. If the fifth mean is

19

, determine: (i) the value of

n

, (ii) the common difference of the entire progression, (iii) the value of the last but one mean.