Letter series CF GJ KN OR – UGC NET Question

The first letters are C(3), G(7), K(11) and O(15), each increasing by 4. The second letters are F(6), J(10), N(14) and R(18), also increasing by 4. Therefore, the next first letter is 15 + 4 = 19 (S) and the next second letter is 18 + 4 = 22 (V). Hence SV is the only pair that continues the uniform +4 progression in both positions.

Option A:
Option A, SV, is correct because it places S (19) after O (15) by +4 and V (22) after R (18) by +4. It preserves the same arithmetic step used in every previous pair. Therefore SV is the correct continuation.

Option B:
Option B, SW, keeps S correct but changes the second letter to W (23), which is +5 from R, not +4. This breaks the constant increment rule in the second position. Hence SW is incorrect.

Option C:
Option C, SX, keeps S correct but takes X (24), which is +6 from R. This increases the step size without any basis in the series. Therefore SX does not fit the pattern.

Option D:
Option D, TX, changes the first letter to T (20), which is +5 from O instead of +4. Since the first position must also increase by exactly 4, TX cannot be the correct next term.