Sol : Option 2
The series is xy/xy/xy/xy/xy/xy. Thus the pattern 'xy' is repeated.

Q.2. FU, KP, PK, ?

1. UG

2. UF

3. GS

4. VR

Sol : Option 2
F is sixth from the beginning of the alphabet & U is sixth from the end.
Similarly K is eleventh from the beginning & P is 11th from the end the same rule is followed in other pairs of the series.

Q.3. xy _ _ yxx _ _ xy _

1. xxxxx

2. xxyxx

3. xxyxy

4. yxxyy

Sol : Option 2
The series is xyx/xyx/xyx/xyx. Thus, the pattern 'xyx' is repeated.

Q.4. qsu ......... ceg , ikm , oqs

1. uwy

2. vya

3. wya

4. axy

Sol : Option 3
There is a gap of one letter in every letter of the group. Also, every second group of the series starts after a gap of 1 letter, i.e., after qsu, we get wya.

Q.5. x _ yx _ y _ zy _ z _ xz _

1. zzxyzy

2. zxxzyx

3. zzxxyy

4. zxzxxy

Sol : Option 3
The series is xzy/xzy/xzy/xzy/xzy. Thus, the pattern 'xzy' is repeated.

Sol : Option 2
The first letter of every group is in alphabetical order, i.e. ABCDE Same is the case with II and III letters of the group. Such as PQRST and KLMNO

Q.7. x _ yx _ y _y _x _ y

1. xyxxy

2. xyyxy

3. xxyyx

4. yyxyy

Sol : Option 4
The series is xyy/xyy/xyy/xyy/xyy. Thus, the pattern 'xyy' is repeated.

Q8. BAC, GFH,LKM,?

1. QPR

2. PQR

3. RQP

4. None of these

Sol : Option 1
Each letter is at a gap of 4 alphabets from the previous i.e. B + 5 = G, A + 5 = F, C + 5 = H. Also, G + 5 = L, F + 5 = K, H + 5 = M.
Hence answer should be QPR

Q9. _ xyy _ yy _ yyx _

1. yxyx

2. yyxy

3. xxyy

4. yxxy

Sol : Option 4
The series is yxy/yxy/yxy/yxy/yxy. Thus, the pattern 'yxy' is repeated.

Q10. BEH, HKN, ?

1. NOT

2. MOQ

3. NQT

4. WTO

Sol : Option 3
The first letter of every group is the last letter of the preceding group with a gap of two letters in every member of the group, i.e., after BEH we get HKN.
So, answer would be NQT i.e. 3^{rd} option.