please can someone work this out ( disclaimer, brain burn out at your own peril)
1, 3, 3, 7, 9, 11, ?
please can someone work this out ( disclaimer, brain burn out at your own peril)
1, 3, 3, 7, 9, 11, ?
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@machel posted:please can someone work this out ( disclaimer, brain burn out at your own peril)
1, 3, 3, 7, 9, 11, ?
27?
are you sure it's two 3's and not a 3 and 5 Machel?
Yes, 1, 3, 3, 7, 9, 11, ?
it is on a test practice paper for the 11+, no answers supplied!
@Baz posted:27?
1+3+3=7, 7+9+11= 27,
we thought of that but it is only two sequences whereas the other questions have 4/5 sequences x
@machel posted:1+3+3=7, 7+9+11= 27,
we thought of that but it is only two sequences whereas the other questions have 4/5 sequences x
Pass then
@Dame_Ann_Average posted:are you sure it's two 3's and not a 3 and 5 Machel?
yes wonder that dammeee
Last weeks Lottery Numbers?
@machel posted:please can someone work this out ( disclaimer, brain burn out at your own peril)
1, 3, 3, 7, 9, 11, ?
tbh can't find any pattern at all I wonder if it was a misprint in the practice paper ??? like dameee said should the 3 should be 5 ?????
@Rocking Ros Rose posted:tbh can't find any pattern at all I wonder if it was a misprint in the practice paper ??? like dameee said should the 3 should be 5 ?????
Well I couldn't do it...so tried to cheat
But none of the solving sites knew the answer either ??
@machel posted:Yes, 1, 3, 3, 7, 9, 11, ?
it is on a test practice paper for the 11+, no answers supplied!
bloody hell, we've a forum full of older people that can't solve it @El Loro we need help
@slimfern posted:Well I couldn't do it...so tried to cheat
But none of the solving sites knew the answer either ??
it works with a 5 Slim, I cheated too
@Dame_Ann_Average posted:it works with a 5 Slim, I cheated too
It can't be this hard...not an 11+ test.
I passed mine back away too
1 3 3 7 9 11 11
1+2=3
3+0=3
3+4=7
7+2=9
9+2=11
11+0=11
@Extremely Fluffy Fluffy Thing posted:1 3 3 7 9 11 11
1+2=3
3+0=3
3+4=7
7+2=9
9+2=11
11+0=11
We looked at this but there isnât a sequence, has to be a misprint! Brain well and truly fried ðĪŠððĪŠð
If the second 3 is not a misprint then the answer is 27, if it should be a 5 then 13.
@slimfern posted:It can't be this hard...not an 11+ test.
I passed mine back away too
Me too
@El Loro posted:If the second 3 is not a misprint then the answer is 27, if it should be a 5 then 13.
I would agree with EL. There's no single clear pattern, so - assuming there's not a misprint - the two "3"s suggest two interweaved series:
1, 3, 3, 7, 9, 11, ?
The first series is 1, 3, 9, ? - this is 3 to the power of x, where x = 0 to 3, so "?" = 3 cubed = 27.
The second series is 3, 7, 11 - this is adding "4" each time, so the next number in the series after "?" would be 15.
There's still not that much info, IMO, to be certain that's what's going on, though. I'd want to see some of the other questions on the paper to confirm they're definitely doing interweaved series as part of the test.
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