10,8,7,14,15 = a,b,c,d,e
a=10
b=a-2
c=b-1
d=c*2
e=d+1
15-2=13
13-1=12
12*2=24
24+1=25
25-2=23
9
(plus) + 4 (minus) - 3
The letter is L and the number is 12.
7 The difference between each successive pair is being halved. 100 -> 52 = 48 52 -> 28 = 24 28 -> 16 = 12 16 -> 10 = 6 Thus the next number is 10 - 6/2 = 7
The next would be 7. 100 minus 48 is 52. 52 minus 24 (half of 48) is 28. 28 minus 12 (half of 24) is 16. etc.. The next in the sequence after 7 would be 5.5.
The number which best completes the sequence below is: 2 9 5 13 10 19 17 ?
What number best completes the sequence 1 1/2 5 10 1/2 18
9
1
13 20 12
(plus) + 4 (minus) - 3
Pattern: +7,-4,+8,-3,+9,-2... Pattern continuation: +10,-1,+11,*0,+12,+1 17+10=27
The letter is L and the number is 12.
23, 22, 44, 45. The pattern is minus 2, minus 1, times 2, plus 1, repeat.
2 6 3 8 6 12 2 6 3 8 6 12
7 The difference between each successive pair is being halved. 100 -> 52 = 48 52 -> 28 = 24 28 -> 16 = 12 16 -> 10 = 6 Thus the next number is 10 - 6/2 = 7
The sequence is: n = n - 2 n = n - 1 n = n * 2 n = n + 1 repeat So, 10, 8, 7, 14, 15, 13, 12, 24, 25, 23, 22, 44, 45, etc...