If n be the number of sequence `a,b,c,d,e` satisfying the conditions (i) a,b,c,d,e are in A.P and G.P. both,(ii) c= 3,7 then `n=`

If a,b,c,d,e,f are in A.P. then d-b= ……

If a, b, c, d, e, f are in A.P then e-c=

If a, b, c, d, e, f are in A.P., then e – c is equal to

If a=2 and e=18 , then find three numbers b,c,d betweem a and e such that (i) their sum is 25, (ii) 2,b,c are in A.P. (iii) c,d, 18 are in G.P.

If a,b,c, are in A.P., b,c,d are in G.P. and c,d,e, are in H.P., then a,c,e are in

If a,b,c, are in A.P., b,c,d are in G.P. and c,d,e, are in H.P., then a,c,e are in

If a,b,c,d,e are five numbers such that a,b,c are in A.P., b,c,d are in G.P. and c,d, e ar in H.P. prove that a,c,e are in G.P.