Choose the best alternative as the answer. - A race always has

C. RIVALS

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.
12 (47) 21
10 (52) 4
64 ? 24

D. 83

Seven executives P, Q, R, S, T, U andW reach office in a particular sequence.
U reaches immediately before P but does not immediately follow S. R is the last one to reach office. T follows immediately after P and is subsequently followed by W. Among the executives, who reaches the office first ? 

B. S

Choose or find odd number pair - (43 - 6) , (28 - 4) , (50 - 7) , (36 - 5)

B. 28 - 4

Choose or find odd letter group - BDYW , CEXZ , DFYW , EGXV

B. CEXZ