In following number series, two terms have been put within brackets. Choose the appropriate option - Look at this series: 1000, 200, 40, . . . What number should come next?

A. 8

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - mnonopqopqrs _ _ _ _ _

C. PQRST

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - ac _ cab _ baca _ aba _ acac

A. AACB

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - b _ b _ bb _ _ bbb _ bb _ b

C. ABABAB

Which term will replace the question mark in the series :
ABD, DGK, HMS, MTB, SBL, ?

A. ZKW