5, 16, 29, 46, 65, 88... what's next
Options are 315, 117, 119, 121

Take the difference between the numbers.

16-5=11
29-16=13
46-29=17
65-46=19
88-65=23

See? The differences are prime numbers. What's the next prime after 23? Add that to 88 to get the next number.

Thanks galactus