### Brain Teasers

# Guess the Pattern 2

What are the next three numbers in this series?

4, 6, 12, 18, 30, 42, 60, 72, 102, 108, ?, ?, ?

4, 6, 12, 18, 30, 42, 60, 72, 102, 108, ?, ?, ?

### Answer

The series lists numbers that are flanked by two prime numbers.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)

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## Comments

Great teaser, I would have never got that without looking at answer

iliked it.go you!

This made my head hurt. It's not used to thinking...

OH! Never would have thought of that. Great teaser.

I never thought of that Great Teaser! Congrats on the t.o.t.d

HAPPY NEW YEAR!!! and good teaser, i didnt get it, but...i didnt even try!

i'm assuming flanked means between, that's not a word we use here. anyhow, that was really hard.

What's wrong with 'flanked'? Made sense to me.

THANKS!! UR STARTING THE NEW YEAR RIGHT! PLEASE please KEEP IT UP. I LIKE CHALLENGES LIKE THIS.

I really liked this one.....excellent brain game for the New Year.

HAPPY NEW YEAR!!! I can never get these teasers! Good one...you stumped me!!

What a great way to start 2006. Now let's see is this or is it not a prime number. Lord knows it was "flanked" by a rough 2005, but most of us made it one way or another. Glad we had Briangle to keep our brains addled. HAPPPPPPPY NEW YEARRRRR EVERY1!!!

Interesting "guess the pattern2"!? Hard to guess this one . Especially on "NEW YEARS IN THE A.M. "HAPPY NEW YEAR EVERYONE" AND HAVE A POSPEROUS ONE TO BOOT.

Great teaser!!! Didn't got that one!!!

I knew it had something to do with prime numbers, but I couldn't figure it out fully enough. Very good.

Wow. what a wakeup! I was convinced it was a series of additions-4+2=6+6=12+6=18+12=30+12=42 +18=60 etc.

Nice One

Happy New Year!

Nice One

Happy New Year!

Yeah, I thought it was a series of addition, but addition of what? Anyway, very hard, for math ret////, I mean math challenged people like me. Prime nos. are one of those things that we don't think of very much, heehee! Very good! Thanks!

HAAAAPPY NEW YEAR!!!

HAAAAPPY NEW YEAR!!!

OUCH! I, too, was going for an adding pattern.

Happy 2 6!!!

Happy 2 6!!!

I guessed the same pattern as thimblenoggin Oh well, great teaser and Happy New Year!!

I too was on the addition path with a couple of multiplication & minuses, but I was obviously on the wrong road Hee hee well Happy New Year to one & all!!

Like Thimblenoggin, I thought it had to do with addition, also. The teaser was hard, and therefore very fun.

I wasn't even close to thinking in that diirection! Too busy looking for differences between numbers or looking for factors, I got stuck in a rut.

Well, you got me for sure. I was going crazy trying to figure out the add-on pattern. Prime huh? I like mine rare

Whatever. I just wrote down how much each number differed from the next one and came up with a pattern. Henceforth, I came up with 114, 126, and 138.

And it was wrong. But whatever. Smart thinking

Stumped me. The distribution of numbers reminded me of primes, but I was still trying to add subtract and multiply.

Excellent puzzle.

Excellent puzzle.

that was hard, i went throught this whole other thing hahaha cool though i never even thought of prime numbers!

didnt get it myself, i thought adding 6 was part of the pattern, but what ever. great teaser.

Jan 01, 2006

This one was difficult, but could also be solved many other ways. Nontheless, a good teaser with a good possible answer.

Happy New Year, Folks! Best wishes for 2006!

Happy New Year, Folks! Best wishes for 2006!

QUICK AND EASY....HAPPY NEW YEAR TO ALL

Loved it, failed it, hated it, in that order. Good job, cenenemeemnemmmmene.

I'm with all the adders... great puzzle to start the new year. Keep them coming!!!

I thought it had something to do with adding too, but saw that it didn't work further in the pattern. Great one! You totally got me

gaah I suck with numbers.

H A R D but fun

doesnt make any sense

HARD!!!GOOD!!!

Get Real, It's A New Year. My Brain Hurts, but I got one Write.

I'll like to see what you come up with Next Year

You See , It's like yes more, more, but then it's, No more. Especially, if it hurts to be Write. Teaser was OK.....

I'll like to see what you come up with Next Year

You See , It's like yes more, more, but then it's, No more. Especially, if it hurts to be Write. Teaser was OK.....

This is my favorite teaser on Braingle!!! Math is my fav. I got it, but it took me 30 min. Like Thimblenoggin, I thought it was +!!!

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