Question 17
Nine students stand in a line to receive SASMO awards. Seven are Primary 5 students, five are gold award winners, and four are silver award winners.
- The two neighbours of every silver awardee are gold award winners.
- No two gold awardees stand next to each other.
- The first and last students are not Primary 5 students.
How many of the nine students are not Primary 5 gold awardees?
Each student has exactly one of the two awards. A silver winner must have a neighbour on both sides.
Input: enter a whole number without units; leading zeroes from the paper answer grid may be omitted.
- The two neighbours of every silver awardee are gold award winners.
- No two gold awardees stand next to each other.
- The first and last students are not Primary 5 students.
How many of the nine students are not Primary 5 gold awardees?
Each student has exactly one of the two awards. A silver winner must have a neighbour on both sides.
Input: enter a whole number without units; leading zeroes from the paper answer grid may be omitted.