Question 12
Kangaroo buys three types of sweets: lollipops cost 4 coins each, peanut sweets 2 coins each, and gummy sweets 1 coin each. Kangaroo buys 10 sweets for 16 coins. What is the least number of gummy sweets?
Editorial task: explain the minimum under both readings: at least one sweet of each type, or zero of a type allowed. Check each claimed minimum against the ten sweets and sixteen coins.

Original source options (retained):
(A) 5; (B) 4; (C) 3; (D) 2; (E) 1
Editorial format note: this essay examines the source wording and its assumptions. The original choices are retained for comparison.
Editorial task: explain the minimum under both readings: at least one sweet of each type, or zero of a type allowed. Check each claimed minimum against the ten sweets and sixteen coins.

Original source options (retained):
(A) 5; (B) 4; (C) 3; (D) 2; (E) 1
Editorial format note: this essay examines the source wording and its assumptions. The original choices are retained for comparison.