Who among the following economists gave the concept of "economies of scale". Which says "many goods and  services can be produced more cheaply in long series"?

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?_x005F_x000D_ _sr_tr_srs_r_srst_

Which of the following terms follows the trend of the given list?_x005F_x000D_ CBABABAB, BACBABAB, BABACBAB,BABABACB,BCABABAB ___________

Which one of the following figures represents the following relationship:_x005F_x000D_ Birds, Parrots, Bats_x005F_x000D_

Which number will complete the series?_x005F_x000D_ 14, 27, 52, 101, 198, ?

What would be the next number in the series  _x005F_x000D_   9, 8, 18, 6, 36, 4, 72, 2, 144, ?

What will be the next set of alphabets in the series? AZ, BY, CX, ___

Water :Ocean :: Snow : ?

Two football players A and B from opposing teams start from the same corner. A runs 35 m East, then 15 m South, turns to his right and runs 60 m.Meanwhile B runs 20 m North, then 25 m West, turns left and runs 20 m. What is the position of B with respect to A?

Three words in bold letters are given in each question, which have something in common among themselves. Out of the four given alternatives, choose the most appropriate description about these three words._x005F_x000D_ Abhi Bhattacharya: Utpal Dutt: Satyajit Ray

Three words in bold letters are given in each question, which have something in common among themselves. Out of the four given alternatives, choose the most appropriate description about these three words._x005F_x000D_ Yeats: Ghalib: Kabir

Three positions of a cube are shown below. What will come opposite to face containing 'I'?_x005F_x000D_

There is a certain relation between two given words on one side of : : and one word is given on another side of : : while another word is to be found from the given alternatives, having the same relation with this word as the given pair has. Select the best alternative Aeroplane:Cockpit::Train:?

The weights of 4 boxes are 20, 30, 40 and 60 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?

The ratio of the ages of man and his wife is 4:3. After 4 years, the ration will be 9:7. If at the time of marriage, the ratio was 5:3, how many years agowere they married?