Let the positive numbers `a , b , c , d` be in AP. Then `a b c ,a b d ,a c d ,b c d` are (2001, 1M) not in AP/GP/HP (b) in AP in GP (d) in HP

Let the positive numbers a ,b ,ca d nd be in the A.P. Then a b c ,a b d ,a c d ,a n db c d are a. not in A.P. /G.P./H.P. b. in A.P. c. in G.P. d. in H.P.

Let the positive numebrs a,b,c,d be in A.P. Then abc,abd,acd,bcd re (A) not in A.P., G.P., H.P. (B) in A.P. (C) in G.P. (D) in H.P.

If three positive numbers a,b and c are in AP, GP and HP as well, than find their values.

If a,b,c are in AP and b,c,d be in HP, then

If a, b, c, d are distinct positive numbers in A.P., then:

If a, b, c, d are in GP, then (b+c)^(2) = ______.

If a, b, c are in AP and a, b, d are in GP, show that a, (a-b) and (d-c) are in GP.

If a, b, c, are in A.P. ., p , q,r, are in H.P. and ap ,bq, cr are in G.P. then