Question

What are the next three numbers in this series?

4, 6, 12, 18, 30, 42, 60, 72, 102, 108, ?, ?, ?
@imqwerty @TheSmartOne
HARD riddle.. xD

Answer 1

adding 2, 6, 6, 12, 12, 18, 12, 30, 6

There is no pattern in this whatsoever.

Maybe it has to do with the numbers. All the numbers are divisible by 2 but nothing based on that.

And I don't get the answer so I just cheated ;p

Answer 2

It seems like a mixed multiplication series

Answer 3

2*2
2*3
2*2*3
2*2*3*3
2*3*5
2*3*7
2*2*3*5
2*2*2*3*3
Then
51*2 hmmm

Answer 4

51=3*17

Answer 5

Hint: The series lists numbers that are flanked by two prime numbers..

Answer 6

ops.. xD..
*got caught*
Accidently type the answer already.. xD

Answer 7

@skullpatrol
can u pls do the rest? ^_^

Answer 8

4 (3 and 5 are prime)
6 (5 and 7 are prime)
12 (11 and 13 are prime)
18 (17 and 19 are prime)
30 (29 and 31 are prime)
42 (41 and 43 are prime)
60 (59 and 61 are prime)
72 (71 and 73 are prime)
102 (101 and 103 are prime)
108 (107 and 109 are prime)

thus

138 (137 and 139 are prime), 150 (149 and 151 are prime), 180 (179 and 181 are prime)

Answer 9

yep,that's the answer.. xD

Answer 10

Thanks for trying.. @TheSmartOne @imqwerty @zzr0ck3r @Bobo-i-bo @skullpatrol

Answer 11

Thanks for asking :-)

Answer 12

^_^

Answer 13

(: