What is the next number of the following sequence

1)18,6,24,4,30,10,1 2,2,6

2)1,1/2,3/2,2,5,1/3 ,5*1/3,15,12,1/4, 49/4

3)2,1,2,4,8,2,16,0. 5,8,3/4

4)7,-35,-34,-3,15,1 6,4

5)81,9^2,162,49,7^2 ,98,25,5^2,50,64

6)2,3,10,15,26,35, 50

7)1,1,3,9,11,121

8)4,2,4,8,6,8,16

9)8.8,11,5.05,9.3, 12,5.15,9.8,13

10)588,196,471,157, 345,115,495,165, 585

11)3,4,12,6,1,8,8,4 ,5,6,30

12)1/3,1/2,1/4,2*1/ 3,3*1/2,2*1/4, 13/3,13/2

13)2,3,6,13,28

14)52,62,42,78,89, 68,49,61,39,63, 76,8*2/3

15)9,3,24,4,9,3,36, 6,9,3,30

16)25,3,7.1,1.50,1, 8.1,1.75,-1,9.1, 2.00

17)44,4.4,0.88, 0.264,0.1056

• 1) 18,6,24,4,30,10,12,2,6, x
  18/3 = 6 ... 24/6 = 4
  30/3 = 10 .. 12/6 = 2
  6/3 = 2
  Ans : 2
  
  4) 7,-35,-34,-3,15,16,4, x
  7 * -5 = -35
  -35 + 1 = -34
  -3 * -5 = 15
  15 + 1 = 16
  4 * -5 = -20
  -20 + 1 = -19
  Ans : -20, -19
  
  5) 81,9^2,162,49,7^2 ,98,25,5^2,50,64, x, y
  81 + 9^2 = 162
  49 + 7^2 = 98
  25 + 5^2 = 50
  64 + 8^2 = 128
  Ans : 8^2 , 128
  
  6) 2,3,10,15,26,35,50, x
  1^2 + 1 = 2
  2^2 - 1 = 3
  3^2 + 1 = 10
  4^2 - 1 = 15
  5^2 + 1 = 26
  6^2 - 1 = 35
  7^2 + 1 = 50
  8^2 - 1 = 63
  Ans : 63
  
  7) 1,1,3,9,11,121, x
  1^2 = 1
  1 + 2 = 3
  3^2 = 9
  9 + 2 = 11
  11^2 = 121
  121 + 2 = 123
  Ans : 123
  
  8) (4,2,4),(8,6,8),(16, x , y)
  (4, 2, 4) --> {2^2, 2^2-2, 2^2}
  (8, 6, 8) --> (2^3, 2^3-2, 2^3}
  (16, x,y) --> {2^4, 2^4-2, 2^4}
  Ans : 14, 16
  
  9) (8.8, 11, 5.05),(9.3, 12, 5.15),(9.8 ,13, x)
  1st number in each group increases by "0.5" -->
  8.8 + 0.5 = 9.3... 9.3 + 0.5 = 9.8
  2nd number in each group increases by "1" -->
  11 + 1 = 12 ... 12 + 1 = 13
  3rd number in each group increases by "0.1" -->
  5.05 + 0.1 = 5.15 ... 5.15 + 0.1 = 5.25
  Ans : 5.25
  
  11) (3,4,12,6),(1,8,8,4),(5,6,30, x)
  3 * 4 = 12... 12/2 = 6
  1 * 8 = 8... 8/2 = 4
  5 * 6 = 30... 30/2 = 15
  Ans : 15
  
  13) 2,3,6,13,28, x
  2 * 2 - 1 = 3
  3 * 2 + 0 = 6
  6 * 3 + 1 = 13
  13 * 2 + 2 = 28
  28 * 2 + 3 = 59
  Ans : 59
  
  14) (52,62,42),(78,89,68),(49,61,39),(63,76, x)
  62 --> 52 + 10... 42 --> 52 - 10
  89 --> 78 + 11... 68 --> 78 - 10
  61 --> 49 + 12... 39 --> 49 - 10
  76 --> 63 + 13... x --> 63 - 10
  Ans : 53
  
  15) (9,3,24,4),(9,3,36, 6),(9,3,30, x)
  9/3 = 3 ... 24/6 = 4
  9/3 = 3 ... 36/6 = 6
  9/3 = 3 ... 30/6 = 5
  Ans : 5
  
  16) (1.25,3,7.1),(1.50,1, 8.1),(1.75,-1,9.1),(2.00, x, y)
  In each group, 1st number increases by "0.25"
  2nd number decreases by "-2" --> {3, 1, -1, x=-1-2=-3}
  3rd number increases by "1" --> {7.1, 8.1, 9.1, y=9.1+1=10.1}
  Ans : -3, 10.1
  
  17) 44,4.4,0.88,0.264,0.1056, x
  44 * 0.1 = 4.4
  4.4 * 0.2 = 0.88
  0.88 * 0.3 = 0.264
  0.264 * 0.4 = 0.1056
  0.1056 * 0.5 = 0.0528
  
  
  
• 10 years agoHelpfull: Yes(17) No(0)
• 1) 18,6,24,4,30,10,12,2,6, x
  18/3 = 6 ... 24/6 = 4
  30/3 = 10 .. 12/6 = 2
  6/3 = 2
  Ans : 2
  
  5) 81,9^2,162,49,7^2 ,98,25,5^2,50,64, x, y
  81 + 9^2 = 162
  49 + 7^2 = 98
  25 + 5^2 = 50
  64 + 8^2 = 128
  Ans : 8^2 , 128
  
  6) 2,3,10,15,26,35,50, x
  1^2 + 1 = 2
  2^2 - 1 = 3
  3^2 + 1 = 10
  4^2 - 1 = 15
  5^2 + 1 = 26
  6^2 - 1 = 35
  7^2 + 1 = 50
  8^2 - 1 = 63
  Ans : 63
  
  7) 1,1,3,9,11,121, x
  1^2 = 1
  1 + 2 = 3
  3^2 = 9
  9 + 2 = 11
  11^2 = 121
  121 + 2 = 123
  Ans : 123
  
  8) (4,2,4),(8,6,8),(16, x , y)
  (4, 2, 4) --> {2^2, 2^2-2, 2^2}
  (8, 6, 8) --> (2^3, 2^3-2, 2^3}
  (16, x,y) --> {2^4, 2^4-2, 2^4}
  Ans : 14, 16
  
  9) (8.8, 11, 5.05),(9.3, 12, 5.15),(9.8 ,13, x)
  1st number in each group increases by "0.5" -->
  8.8 + 0.5 = 9.3... 9.3 + 0.5 = 9.8
  2nd number in each group increases by "1" -->
  11 + 1 = 12 ... 12 + 1 = 13
  3rd number in each group increases by "0.1" -->
  5.05 + 0.1 = 5.15 ... 5.15 + 0.1 = 5.25
  Ans : 5.25
  
  11) (3,4,12,6),(1,8,8,4),(5,6,30, x)
  3 * 4 = 12... 12/2 = 6
  1 * 8 = 8... 8/2 = 4
  5 * 6 = 30... 30/2 = 15
  Ans : 15
  
  
  
  
  
  
  
• 10 years agoHelpfull: Yes(1) No(0)
• 2)ans 48
  1+(3/2-1/2)*1=2
  5+(16/3-1/3)*2=15
  12+(49/4-1/4)*3=48
• 10 years agoHelpfull: Yes(1) No(0)
• 3)2,1,2,4,8,2,16,0.5,8,3/4,?
  2*1=2
  2*4=8
  8*2=16
  16*0.5=8
  8*3/4=6
  ans:6
• 9 years agoHelpfull: Yes(1) No(0)
• 12)1/3,1/2,1/4,2*1/3,3*1/2,2*1/4,13/3,13/2,?
  ANS
  convert the fractions and we get
  4,6,3,28,42,27,52,78,x
  (4,6,3)(28,42,27)(52,78,x)
  1st and last number in each group difference is 1 hence
  x=51
• 9 years agoHelpfull: Yes(1) No(0)
• 15) (9,3,24,4),(9,3,36, 6),(9,3,30, x)
  9/3 = 3 ... 24/6 = 4
  9/3 = 3 ... 36/6 = 6
  9/3 = 3 ... 30/6 = 5
  Ans : 5
  
  17) 44,4.4,0.88,0.264,0.1056, x
  44 * 0.1 = 4.4
  4.4 * 0.2 = 0.88
  0.88 * 0.3 = 0.264
  0.264 * 0.4 = 0.1056
  0.1056 * 0.5 = 0.0528
  Ans : 0.0528
• 10 years agoHelpfull: Yes(0) No(0)
• 1)18/3=6 24/6=4 30/3=10 12/6=2 6/3=2 ans:2
  
  15) 9/3=3 24/6=4 9/3=3 36/6=6 9/3=3 30/6=5 ans:5
  
  7) 1^2=1 1+2=3 3^2=9 9+2=11 11^2=121 121+2=123 ans:123
  
  8)(4 2 4) (8 6 8) (16 14 16)
  the 1st and 3rd term in each group is multiplied by 2 by its previous group and the middle term is obtained by 2+4=6 6+8=14 ans:14,16
  
  13)2x1+1=3 3x2+0=6
  6x2+1=13 13x2+2=28
  28x3+1=85 ans:85
  
  
• 10 years agoHelpfull: Yes(0) No(1)