a1,a2,a3,…………. are distinct terms of an A.P. We cal (p,q,r) an increasing triad if ap,aq,ar are in G.P. where p,q,rεN such that pA. if a1 is a multiple of 4 then every term of the A.P. is an integer
B. (85,149,261) is an increasing triad
C. if the common difference of the A.P. is 14,then its first term is 13
D. ratio of the (4k+1)th term and 4kth term can be 4
