Question

Descoperă regula și continua șirul :a)5,11,23 .B) 4,11,32 c) 12,23,34.Multumesc frumos.

Answer 1

a)5,11,23,41,65,95
5+6×1=5+6=11
11+6×2=11+12=23
23+6×3=23+18=41
41+6×4=41+24=65
65+6×5=65+30=95
.......................................
b)4,11,32,97,146,209
4+7×1=4+7=11
11+7×3=11+21=32
32+7×5=32+35=97
97+7×7=97+49=146
146+7×9=146+63=209
.............................................
c)12,23,34,45,56,67
12+11=23
23+11=34
34+11=45
45+11=56
56+11=67
..................

Answer 2

a ) 5 , 11 , 23

  5 , 5+6×1=11 ;  11 + 6×2=23 ; 23 + 6×3 =41 ; 41 + 6×4 = 65...................

5 , 11 , 23 ; 41 ; 65..........

B) 4,  11, 32,.................

4 + 7 × 1 = 4 + 7  = 11;   11 + 7  × 3 = 11 + 21 = 32

32 + 7 × 5 = 32 + 35  = 97 ; 97 + 7 × 7 = 97 + 49 = 146

4, 11, 32, 97, 146.....

C)   12,  23,  34

 1 + 11 = 12;  12 +11 = 23  ; 23 + 11 = 34 ;  34 + 11 = 45 ; 45 + 11 = 56

12,  23,  34 ; 45 ; 56 ; 67 .........................