Question

If in the English alphabet, every even letter beginning from B is replaced by odd number beginning with 3, which letter/number will be the third to the right of the tenth number/letter counting from your right?

• A. M
• B. S
• C. 11
• D. None of these

Hint:

Always rewrite the full modified sequence before counting positions—it avoids confusion.

Answer 1

The Correct Option is B

Concept: This problem is based on coded alphabet positions where transformations are applied to letter positions and then positional counting is performed from the right side. Step 1:Assign positions to alphabets.
\[ A(1), B(2), C(3), D(4), \ldots, Z(26) \]
Step 2:Apply the given transformation rule.
Even-position letters are replaced by the next odd number: \[ B(2)\rightarrow 3,\; D(4)\rightarrow 5,\; F(6)\rightarrow 7,\; \ldots,\; Z(26)\rightarrow 27 \] This forms the sequence: \[ A, 3, C, 5, E, 7, G, 9, I, 11, K, 13, M, 15, O, 17, Q, 19, S, 21, U, 23, W, 25, Y, 27 \]
Step 3:Find the 10th element from the right.
Counting from the right side: \[ 27(1), Y(2), 25(3), W(4), 23(5), U(6), 21(7), S(8), 19(9), Q(10) \] So, the 10th element from the right is: \[ Q \]
Step 4:Apply the shift rule (move 3 to the right in sequence).
\[ Q \rightarrow R \rightarrow S \rightarrow T \] So the final result after moving 3 positions to the right is: \[ T \]
Final Answer: T