What comes next in these number sentences
1,2,4,7,12,19,_,_,_
1,3,7,13,21,_,_,_
1,43,2,41,3,39,4,37,_,_,_
2,4,9,16,25,_,_,_
11.22,66,264,1320_,_,_
3,5,6,10,9,15,12,_,_,_
2007-11-03 11:35:44 · 8 answers · asked by psichosis34 1 in Science & Mathematics ➔ Mathematics
1,2,4,7,12,19...
Pattern: +1,+2,+3,+5,+7,+11,+13,+17,+19,etc.
Every time, the addition increases to the next prime.
Next 3 #'s: 30,43,60
1,3,7,13,21...
Pattern: +2,+4,+6,+8,+10,+12
Rather self-explanatory, I should think.
Next 3 #'s: 31,43,57
1,43,2,41,3,39,4,37...
Pattern: +42,-41,+39,-38,+36,-35,+33,-32,+30,-29,+27,-26
Adding and subtracting alternates everytime.
42(-1)41(-2)39(-1)38(-2)36(-1)35(-2)33(-1)32
As for the numbers, see the pattern?
Next 3 #'s: 5,35,6
2,4,9,16,25...
Pattern: 2*2,3*3,4*4,5*5,6*6,7*7
These are all squares.
Next 3 #'s: 36,49,64
11,22,66,264,1320...
Pattern: *2,*3,*4,*5,*6,*7
Self-explanatory
Next 3 #'s: 7920,55440,443520
3,5,6,10,9,15,12...
Pattern: Look at in alternating numbers
3,6,9,12
5,10,15
See the pattern?
Next 3 #'s: 20,15,25
2007-11-03 11:48:33 · answer #1 · answered by Sparkle 4 · 0⤊ 0⤋
i think i know the last two:
11, 22, 66, 264,1320, 7920, 55440, 443320
pattern: x2, x3, x4, x5...etc.
3, 5, 6, 10, 9, 15, 12, 20, 15, 25
pattern: every second number goes up by 3 (3, 6, 9, 12), and every second number starting with the second goes up by 5 (5, 10, 15)
there's probably a more mathmatical way of saying those patterns. good luck with the other ones...
2007-11-03 11:43:57 · answer #2 · answered by •·.·´¯la cαnαdiennε¯`·.·• 3 · 0⤊ 0⤋
2. is 31 43 57
3 is 5 36 6
4 is 7920 55440 443520
hopes this helps im good at math
2007-11-03 11:48:56 · answer #3 · answered by Anonymous · 0⤊ 0⤋
-7= 3x-8 while putting -8 to the different component of equation, the sign will substitute, so this is -7+8= 3x meaning a million=3x consequently x= a million/3 and don't complication concerning the order, this is not significant! there's a rule in math concerning the order! you could surely examine it via substituting a million/3 into the equation i.e -7= 3*a million/3-8 -7=-7!!!
2016-11-10 04:24:38 · answer #4 · answered by Anonymous · 0⤊ 0⤋
3) 5, 35, 6
2007-11-03 11:43:54 · answer #5 · answered by jenks_1987 2 · 0⤊ 0⤋
1) 25,32,40; pattern:+1,+2,+3, etc
2) 31,43,57; pattern: +2,+4,+6, etc
3) 5, 35, 6; pattern: every other, 1,2,3 (+1) etc; 43, 41, 39 (-2) etc
4) 36,49,64; pattern: x^2
5) 7920,55440,443520; pattern: x1,x2,x3, etc
2007-11-03 11:51:23 · answer #6 · answered by vi3t10nisgirl 4 · 0⤊ 0⤋
30
31
5
36
7920
20
2007-11-03 11:46:38 · answer #7 · answered by Computer Guy 7 · 0⤊ 0⤋
1,2,4,7,12,19,_,_,_ (i dont know)
1,3,7,13,21,(31,43,57)
1,43,2,41,3,39,4,37,(5,35,6)
2,4,9,16,25,(36,49,64)
11.22,66,264,1320(7920,55440,44,520)
3,5,6,10,9,15,12,_,_,_ ( i dont know )
2007-11-03 12:03:00 · answer #8 · answered by Anonymous · 0⤊ 0⤋