Question

four no. are inserted btween the the no. 4 and 39 such that an a.p. results find biggest of these four no.

Answer 1

let a is the first term and d is the common difference
hence ,
a, a+d, a+2d, a+3d, a+4d, a+5d are all number in which a=4 and a+5d=39
a=4
a+5d=39
5d=39-4
d=7
hence four number between 4 and 39 are 11,18,25,32

Answer 2

11,18,25,32 is the answer... assign a=4 and a+5d=39 and find the four terms between them by just solving these two equations...