If `a, b and c` are three terms of an `A.P.` such that `a !=b`, then `(b-c)/(a-b)` may be equal to (A) `sqrt2` (B) `sqrt3` (C) `1` (D) `3`

If a,b,c be the pth , qth and rth terms of an A.P., then p(b-c) + q(c-a) + r(a-b) equals to :

If the first three terms of an A.P are b, c and 2b, then find the ratio of b and c

If the first three terms of an A.P are b, c and 2b, then find the ratio of b and c

If a,b,c are in H.P,b,c,d are in G.P, and c,d,e are in A.P, then (ab^(2))/((2a-b)^(2)) is equal to

If the first three terms of an A.P are b,c and 2b ,then find the ratio of b and c

If a,b,c are in A.P., then a^2(b+c)+b^2(c+a)+c^2(a+b) is equal to

If a, c, b are in A.P. and b, c, d are in G.P. prove that, b, (b-c), (d-a) are in G.P.

If a,b,c are three unequal numbers such that a,b,c are in A.P. And b-a, c -b , a are in G.P., then a: b : c is :

Let a = hati - 2 hatj + 3 hatk , If b is a vector such that a.b =|b| ^(2) and |a - b | = sqrt7, then |b| is equal to a) sqrt7 b) sqrt3 c)7 d)3