Intermediate June 2017 Unit 2 Q3
3. Calculate the answer when,
‘the largest prime number that is a factor of 28’
is multiplied by
‘the smallest prime number that is a factor of 15’. [2]
Corrected by Westie's Workshop
- The board's question paper printed “the smallest prime number that is factor of 15”. Changed to “the smallest prime number that is a factor of 15” because the word “a” is missing.
Original: see the board's question paper PDF (link above).
| Scheme | Marks | Comments |
|---|---|---|
| (7 × 3 =) 21 | B2 | B1 for sight of 7 × a (or a × 7) OR b × 3 (or 3 × b) OR 7 OR 3 unambiguously identified. |