In following number series, two terms have been put within brackets. Choose the appropriate option - Look at this series: 544, 509, 474, 439, . . .What number should come next?

A. 404

In following questions, one term in number series is incorrect. - Find out the incorrect number 196, 169, 144, 121, 80

A. 80

In following questions, one term in number series is incorrect. - Find out the incorrect number 8, 13, 21, 32, 47, 63, 83

C. 47

In following questions, one term in number series is incorrect. - Find out the incorrect number 46080, 3840, 384, 48, 24, 2, 1

C. 24

In following alphabet series , one term missing as shown by question mark . Choose missing term from options. - deb, ijg, nol, ?, xyv

D. STQ