इस श्रंखला को देखें: 3, 4, 7, 8, 11, 12, ... आगे कौन सी संख्या आनी चाहिए? , Look at this series: 3, 4, 7, 8, 11, 12, ... What number should come next?

A. 7

B. 10

C. 14

D. 15

Correct Answer :

D. 15

Explanation

This alternating addition series begins with 3; then 1 is added to give 4; then 3 is added to give 7; then 1 is added, and so on.