Four A.Ms are inserted between 12 and 42. The common difference between the terms of the resulting A.P. is
7
6
8
10
5 harmonic means are inserted between 5 and 10. The common difference of corresponding A.P is.
Four Geometric means are inserted between 2 and 486. Find the common ratio of the resulting G.P.
16 A.Ms are inserted between 5 and 50. Find the sum of all the A.Ms.