CALANDER is coded in a code as CLANAEDR. Find the code for CIRCULAR under the…

In letter/alphabet-based coding-decoding questions, the code is produced by applying one fixed transformation to every letter of the given word.

A common transformation keeps the first and last letters unchanged and reverses the letters within each adjacent pair formed from the remaining middle letters; this rule is deduced by comparing the given word with its code.

1. Split CALANDER (C-A-L-A-N-D-E-R) keeping the first letter C and the last letter R fixed, and group the middle six letters A-L-A-N-D-E into three adjacent pairs: AL, AN, DE.

2. Reverse each pair: AL → LA, AN → NA, DE → ED.

3. Join the pieces: C + LA + NA + ED + R = CLANAEDR — this matches the given code exactly, confirming the rule.

4. Apply the same rule to CIRCULAR (C-I-R-C-U-L-A-R): keep the first letter C and the last letter R fixed, and group the middle six letters I-R-C-U-L-A into three adjacent pairs: IR, CU, LA.

5. Reverse each pair: IR → RI, CU → UC, LA → AL.

6. Join the pieces: C + RI + UC + AL + R = CRIUCALR.

Reversing the pairs back — RI → IR, UC → CU, AL → LA — restores C-IR-CU-LA-R, i.e. CIRCULAR, confirming the transformation is consistent in both directions.

So the code for CIRCULAR is CRIUCALR.