Qus: Look at this series: 3, 4, 7, 8, 11, 12, ... What number should come next?

Qusइस श्रंखला को देखें: 3, 4, 7, 8, 11, 12, ... आगे कौन सी संख्या आनी चाहिए?

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A. 7
B. 10
C. 14
D. 15

Solution

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.