ITPEC IP April 2026 Question 8

Validate the unit, then count the remaining thousands — A is amount mod 1000 ≠ 0, and B is (amount mod 10000) ÷ 1000.

A valid amount must be a multiple of 1,000, so an error is required when the remainder after division by 1,000 is not zero. The number of 10,000 notes is the integer part of amount ÷ 10000. After those notes are removed, amount mod 10000 remains; dividing it by 1,000 gives the number of 1,000 notes.

Answer (c)

Why not others:
- (a) rejects valid multiples of 1,000 because its condition is reversed
- (b) both reverses validation and counts all thousands, including value already represented by 10,000 notes
- (d) validates correctly but its B expression double-counts the 10,000-note portion

Key rule: Use mod to validate divisibility and to isolate the remainder after larger denominations have been taken.

AI-generated — may contain errors