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 letter group - BDYW , CEXZ , DFYW , EGXV

B. CEXZ

Number of letters skipped in between adjacent letters in the series are multiples of 3.
Which of the following series observes this rule ?

A. AELPZ

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.
Z4 X3 V9
A6 C2 ?
T5 R4 P15

B. E12

In a certain code language, '851' means 'good sweet fruit' ; '783' means 'good red rose' and '341' means 'rose and fruit'. Which of the following digits stands for 'sweet' in that language ?

B. 5