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NOVEMBER 2025 / BEGINNER / QUESTION 9

49th Element

Archived question

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View original booklet · page 7 ↗
THE QUESTION

Text from the official booklet. Refer to the PDF for original mathematical notation, formatting, and linked input files. Printed samples and inputs are reproduced as published.

A robotics database stores 100 robot component codes in the order they were added.
Your task is to identify the 49th element in the list. The full list of component codes is:
VT63, BZ72, KU48, ZJ37, NH22, QG78, ZV28, IS97, IO55, LP36, ZM76, GU80,
XC61, SU90, AM52, GI18, EO40, UD79, LC50, WZ72, CO25, OV79, FU80, PL86,
UI40, HE33, AZ43, MC26, WY20, XY79, RV77, HV37, XP63, PL94, QS55, CP72,
PI34, GT24, SJ31, IV22, UW38, BO78, PB25, QP83, DC24, AA33, SM17, YA64,
QV18, FQ54, LB69, BC60, FJ70, VX31, SF17, UE30, IG86, XR11, MK82, WX93,
JV42, DR68, TI15, OD71, JH55, PX89, DI63, VC86, FI40, FL96, OK61, WO94,
SE18, GE77, XX87, TW73, IV16, VW63, EZ91, ZV26, ZK96, KA11, SA96, NC25,
PF48, HZ22, MX90, CH67, UD42, DN93, QC29, HA15, FG50, YY15, WY87, RS68,
QJ78, EJ47, AD52, IJ21
Identify the 49th element.

CHECK YOUR ANSWER

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Run your program in your own editor, then paste its output below. This checks the stated output; it does not assess your full program. Practice attempts do not affect competition scores.

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Your output

QV18

The 49th item uses zero-based index 48: QV18.

Source: Girls in Code SEA 2025 Fall Competition, 29 November 2025. Booklet created by Emily Xu and the GIC question authors. Shared for non-commercial educational use with attribution, as permitted in the booklet.