Which letter is exactly midway between G and Q in the given alphabets:

The correct answer is B. The letter midway between G and Q is L.

Give each letter its place in the alphabet: G is 7th and Q is 17th. The midpoint is at position (7 + 17) / 2 = 12, which is L. You can also count the letters between G and Q: H, I, J, K, L, M, N, O, P. That is nine letters, and the middle one is the fifth, L.

• A) K is 4 places after G but 6 places before Q, so it is not midway.
• C) M is 6 places after G but only 4 places before Q.
• D) N is 7 places after G and only 3 before Q.

This is a basic alphabetical position and series question from the reasoning and aptitude part of the CSAT paper. The same idea of positional arithmetic helps with letter-coding and sequence questions.

Trap: Aspirants often count G and Q themselves, or count the letters on one side only, and land on K or M. Always check that the two distances from the endpoints are equal.