What is the next number
2, 9, 28, 65, _____.
Answer & explanation
Correct answer: option 2
The correct answer is Option 2: 126
Look at the pattern: 2, 9, 28, 65, ?
Write them as cubes plus 1:
1³ + 1 = 2
2³ + 1 = 9
3³ + 1 = 28
4³ + 1 = 65
So the pattern is:
n³ + 1
Next term:
5³ + 1 = 125 + 1 = 126