Answer to Math Quiz (3)

Hi all,
Here is the answer. Congratulations again to those of you who manage to get the answer right.
Vicki, Dara, Ashley and Niki, you have explained very well too! Keep it up!
:-)

What is the answer in the blank?




Ans: RI
Explanation: Look at the first row of letters - RA, SC and TE. The 2nd letter of each pair of letters are A, C and E. The pattern is such that it skips by a letter. A to C skips letter B.
C to E skips letter D.
If you look at the 2nd row of letters - QC, RE and SG, the 2nd letter of each pair of letters are C, E and G. Again, it skips a letter to get to the next letter. C to E skips letter D.
E to G skips letter F.
This pattern applies to the last row of letters, PE, QG and ?. From E to G, it skips letter F. So, G to ? will skip letter H. As such,the 2nd letter should I.
If you look at the diagonal row of letters, RA, RE and ?, the first letter R is underlined. This is again a pattern and hence, the first letter of ? should be R.
That makes the answer RI.