In the following question, a matrix of certain characters is given. These characters follow a certain trend, row-wise or column-wise. Find out this trend and choose the missing character accordingly.
? 13 49
9 17 69
13 11 59

A. 5

Choose or find odd letter group - EDKL , LMST , NMUV , QPRS

B. LMST

Choose or find odd word - Sweep , Wipe , Scrub , Wash , Stain

E. STAIN

Choose or find odd word - Mackenzie , Yenisei , Michigan , Danube

C. MICHIGAN

How many 7's are there in the following series which are preceded by 6 which is not preceded by 8 ?
8  7  6  7  8  6  7  5  6  7  9  7  6  1  6  7  7  6  8  8  6  9  7  6  8  7

D. THREE