Given:

Seven persons

Seven designations - Chief Executive Officer (CEO), Chief Operating Officer (COO), Chief Financial Officer (CFO), Chief Technology Officer (CTO), Chief Marketing Officer (CMO), Chief Legal Officer (CLO) and Chief Information Officer (CIO).

The order of seniority is the same as given above - (CEO) is the senior-most designation and (CIO) is the junior-most designation. 

Now,

1) Three designations are there between D and E.

2. D is not the senior most person but senior to the person who is CTO.

3. One person has a designation between G and H.

4. E is just junior to H. 

5) G is junior to E. So cases I and III get eliminated.

6) C is senior to H.

7) B is senior to C but junior to A.

Thus, the final arrangement is -

Five persons are junior to D.

The correct answer is Five.

Given:

Seven persons

Seven designations - Chief Executive Officer (CEO), Chief Operating Officer (COO), Chief Financial Officer (CFO), Chief Technology Officer (CTO), Chief Marketing Officer (CMO), Chief Legal Officer (CLO) and Chief Information Officer (CIO).

The order of seniority is the same as given above - (CEO) is the senior-most designation and (CIO) is the junior-most designation. 

Now,

1) Three designations are there between D and E.

2. D is not the senior most person but senior to the person who is CTO.

3. One person has a designation between G and H.

4. E is just junior to H. 

5) G is junior to E. So cases I and III get eliminated.

6) C is senior to H.

7) B is senior to C but junior to A.

Thus, the final arrangement is -

CFO is the designation of B

The correct answer is CFO.

Given:

Seven persons

Seven designations - Chief Executive Officer (CEO), Chief Operating Officer (COO), Chief Financial Officer (CFO), Chief Technology Officer (CTO), Chief Marketing Officer (CMO), Chief Legal Officer (CLO) and Chief Information Officer (CIO).

The order of seniority is the same as given above - (CEO) is the senior-most designation and (CIO) is the junior-most designation.

Now,

1. Three designations are there between D and E.

2. D is not the senior most person but senior to the person who is CTO.

3. One person has a designation between G and H.

4. E is just junior to H.

5. G is junior to E. So cases I and III get eliminated.

6. C is senior to H.

7. B is senior to C but junior to A.

Thus, the final arrangement is -

C is the CTO.

The correct answer is C.

The logic is:

1. Second letter of every term except "AZC" is two forward letter of first letter according to alphabet order.
2. Third letter of every term except "AZC" is reverse order letter of second letter according to alphabet order.

AZC is the odd one out.

Clearly, no meaningful word is possible.

So, X is the correct answer.

The logic follows here is :-

Given series :

Left side E 4 W 2 G 6 @ S 5 8 X A ! I M 9 & Q ^ J L # 7 * C $ G V % K Right side

 8^th to the right of 14^th from the left end → 14^th from left end + 8^th to right of 14^th → 22^nd from left end 

Clearly, 22^nd from left end is '#'.

Thus, the correct answer is "#"$.

The logic follows here is :-

Given series :

Left side E 4 W 2 G 6 @ S 5 8 X A ! I M 9 & Q ^ J L # 7 * C $ G V % K Right side

Vowels that are which is immediately preceded by a symbol and immediately followed by a consonant is :

E 4 W 2 G 6 @ S 5 8 X A ! I M 9 & Q ^ J L # 7 * C $ G V % K

Hence, there is only one vowel which is immediately preceded by a symbol and immediately followed by a consonant.

Thus, the correct answer is "One".

The logic follows here is :-

Given series :

E 4 W 2 G 6 @ S 5 8 X A ! I M 9 & Q ^ J L # 7 * C $ G V % K

Here, the group formed is second element is +4 element of first element and third element is -2 of second element.

Hence, &^M does not belong to the group.

Thus, the answer is "&^M"$.

The logic follows here is :-

Given series :

E 4 W 2 G 6 @ S 5 8 X A ! I M 9 & Q ^ J L # 7 * C $ G V % K

If all numbers are dropped the series is :

E W G @ S X A ! I M & Q ^ J L # * C $ G V % K

Therefore, 8^th from left end is '!'.

Thus, the correct answer is "!".

The logic follows here is :-

Given series :

E 4 W 2 G 6 @ S 5 8 X A ! I M 9 & Q ^ J L # 7 * C $ G V % K

Symbols which are immediately preceded by a number and followed by an alphabet is :

E 4 W 2 G 6 @ S 5 8 X A ! I M 9 & Q ^ J L # 7 * C $ G V % K

Hence, there are three symbols which are immediately preceded by a number and followed by an alphabet.

Thus, the correct answer is "Three".