Question: 6 -

Find the missing pair in the series, EQ, FS, HW, KA, __, TL

AM

OB

OF

AL

Answer:

OF

Solution:

It is a mixed series.
The pattern for the first letter of each segment is;
E⁺¹, F⁺², H⁺³, K⁺⁴, O⁺⁵, T⁺⁶
The pattern for the second letter of each segment is;
Q⁺², S⁺³, W⁺⁴, A⁺⁵, F⁺⁶, L⁺⁷
Therefore, the missing pair is OF.

Question: 7 -

Find the missing letter in the series, C, G, K, _, S.

L

P

O

Q

Answer:

O

Solution:

C⁺⁴, G⁺⁴, K⁺⁴, O⁺⁴, S⁺⁴

Therefore, the missing number is (K+4) O.

Question: 8 -

What is the missing letter in the series, U, O, I, _, A?

K

E

A

F

Answer:

E

Solution:

The series contains vowels in reverse order, U, O, I, E, A. So, the missing letter is E.

Question: 9 -

Which letter should come next in the series F,G,H,J,K,L,M,N,P,_?

T

R

Q

O

Answer:

Q

Solution:

The series contains consonants in increasing order, so Q should come next in the series.

Question: 10 -

Which letter should come next in the series, Q, J, E, B, _?

Z

A

X

C

Answer:

Z

Solution:

Q^-7, J^-5, E^-3, B^-2, _

In this series, consecutive prime numbers (in decreasing order) are subtracted from each letter. So, the next number is B - 2 = Z.