18
27 2+7 = 9 9 -4 = 5 5+8 = 13 13-3 = 10 10+9 = 19 19 - 2 = 17 17+10 = 27 Answer
27
27
2 9 5 13 10 19 17 27 26 37 37 49 50 ...The sequence is composed of these two sub-sequences:2 5 10 17 26 37 50 (+3,+5,+7,+9,+11,...)9 13 19 27 37 49 (+4,+6,+8,+10,+12,...)
2 5 9 10 13 17 19
2 9 5 13 10 19 17
The number after 17 is 27. 2+7 = 9 9 - 4 = 5 5 + 8 = 13 13 - 3 = 10 10 + 9 = 19 19 - 2 = 17 17 + 10 = 27
2 9 5 13 10 19 17 27 26 37 37
that best completes the sequence 2 9 5 13 10 19 17 is 27.
To find the pattern, simply look for the difference in the first two numbers, then the following pair of numbers, etc. 2 9 5 13 10 19 17 2 + 7 = 9 9 - 4 = 5 5 + 8 = 13 13 - 3 = 10 10 + 9 = 19 19 - 2 = 17 The pattern is +7, -4, +8, -3, +9, -2...
18
27 2+7 = 9 9 -4 = 5 5+8 = 13 13-3 = 10 10+9 = 19 19 - 2 = 17 17+10 = 27 Answer
27
27,26,37... 2+7=9, 9-4=5, 5+8=13, 13-3=10, 10+9=19, 19-2=17, 17+10=27,27-1=26, 26+11=37,37-0=37 add 1 more to first # subtract 1 less to second #
How are we supposed to answer this without the numbers? 27: 2 (+7=) 9 (-4=) 5 (+8=) 13 (-3=) 10 (+9=) 19 (-2=) 17 (+10=) 27 (-1=) 26
twenty-seven.