Foundation June 2019 Paper 3 Q13
13 The first term of a sequence of numbers is 24
The term-to-term rule of this sequence is ‘add 8’
Josie says,
“No number in this sequence is in the 5 times table.”
(a) Give an example to show that Josie is wrong. (1)
(b) Is 85 a number in this sequence?
Give a reason for your answer. (1)
Give a reason for your answer. (1)
| Answer | Mark | Mark scheme |
|---|---|---|
| example | C1 | example given eg 40, 80, etc. |
| Answer | Mark | Mark scheme |
|---|---|---|
| No with reason | C1 | for No with reason Acceptable examples 80 and 88 are both in the sequence 80 is in the sequence and 85 is 5 more 24, 32, ..... 80, 88, .... 85 is not in the 8 times table 85 is an odd number \(8n+16=85\) so \(n\) is not a whole number. Not acceptable examples adding 8 each time will not lead to 85 (insufficient) it goes past 85 Yes ..... |
Additional guidance
No can be implied from their statement