BAAC

yxyzxy

bcacac

There are three series to look for here. The first letters are alphabetical in reverse: Z, Y, X, W, V. The second letters are in alphabetical order, beginning with A. The number series is as follows: 5, 4, 6, 3, 7.

aking pairs of letters in the inner and outer segments of each eighth of the diagram, the numerical values always add up to 20.

The given figure contains numbers 1 to 6 in three alternate segments, the smaller number being towards the outside and the numbers 14 to 19 in the remaining three alternate segment s with the number towards the inside.

In the figure it is clear that, 15 – 5 = 10, 20 – 7 = 13 which indicates that result number is the alphabetic order of the corresponding letter in a group such as 5, 15 and J.

so 14-6=8  that is H

(OR)

Here, 4 Sets can be observed.

1st: 5, 15, J ==> 5 – 15 = 10 is the numerical of J

2nd: 20, 7, M ==> 20 – 7 = 13 is the numerical of M

3rd: 23, 11, L ==> 23 – 11 = 12 is the numerical of L

Like wise 4th: 14, ? , H

here, the is the numerical of H is 8

===> 14 – ? = H

===> 14 – ? = 8 (numerical of H)

===> ? = 14 – 8 = 6

Therefore ? = 6

Putting the position of the letters in reverse order

P = 11, S = 8, V = 5 and Y = 2.

In alphabetic order of `A’ is one while that of E is 5

in the first column A=>D=3,D=>I=5

in second column D=>I=5, I=>P=7

in third column G=>N=7, N=>W=9

Positions of alphabets (A to Z) is (1-26)    we have:
In the first column, P-A=16-1=15=O.
In the second column, J-D=10-4=6=F.
So, in the third column, missing letter =O-I=15-9=6 =F

so the missing numbers are  21,14