‘Economics is a Science which deals with wealth’ was referred by(a) Alfred Marshal(b) J.B. Say(c) Adam Smith(d) A.C. Pigou.

(a) Pay attention / (b) to what / (c ) I am saying / (d) No error.

If the four consecutive coefficients in any binomial expansion be a, b, c, d, then prove that (i) (a+b)/a , (b+c)/b , (c+d)/c are in H.P. (ii) (bc + ad) (b-c) = 2(ac^2 - b^2d)

Environment is related to which of these fields of study ? A. Bio-diversity B. Economic decision making C. Resource management D. Oceanology

If the four consecutive coefficients in any binomial expansion be a,b,c and d then (A) (a+b)/a,(b+c)/b,(c+d)/c are in H.P. (B) (bc+ad)(b-c)=2(ac^2-b^2d) (C) b/a,c/b,d/c are in A.P. (D) none of these

Incorrect statement are :- (a) A.C. meters can measure D.C also (b) If A.C. meter measures D.C. there scale must be linear and uniform (c) A.C. and D.C. meters are based on heating effect of current (d) A.C. meter reads rms value of current

A family is related by A. blood B. affection C. cooperation D. economic activity