Question 5
EasyOriginal questionWhich number continues the series 2, 3, 5, 7, 11, 13, ?
Show the answer and explanation
CorrectNot quiteAnswer B
Correct answer: B
Explanation
The terms are the prime numbers in order: 2, 3, 5, 7, 11, 13.
The next prime after 13 is 17 (14, 15 and 16 all have factors).
Worth noting
15 is odd but not prime . 19 skips 17, which is prime.
- Concept
- Consecutive prime numbers
- Typical timeTypical
- 40 s
- Your timeYours
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Ten questions from Number and Letter Series, at your own pace.