2 9 5 13 10 19 17?
2007-10-05 08:36:26 · 7 answers · asked by yvonnah 2 in Science & Mathematics ➔ Mathematics
27 then 26
2007-10-05 08:39:11 · answer #1 · answered by John V 6 · 2⤊ 0⤋
A) Split it into two rows, alternating numbers:
2, X, 5, X, 10, X 17 ...
X, 9, X,13, X, 19, X ...
B) Now find the pattern between the numbers.
Row #1 skips +3, +5, +7, +9, +11...
Row #2 skips +4, +6, +8, +10, +12...
C) The missing number is +8 from 19, which is equal to 27.
Putting the rows back together, we have:
2 9 5 13 10 19 17 27
2007-10-05 15:47:02 · answer #2 · answered by Anonymous · 0⤊ 0⤋
27
+7-4+8-3+9-2+10
2007-10-05 15:40:31 · answer #3 · answered by twosey ♥ 5 · 1⤊ 0⤋
+7, -4, +8, -3, +9, -2, so the next one would be +10 so the answer is 27
2007-10-05 15:40:01 · answer #4 · answered by tmg03 3 · 2⤊ 0⤋
+7-4+8-3+9-2+10
so the ans is 27
2007-10-05 15:39:20 · answer #5 · answered by dumber 2 · 1⤊ 0⤋
27
Ad 7, subtract 4, add 8 subtract 3, add9 subtract 2, add 10
2007-10-05 15:40:31 · answer #6 · answered by ironduke8159 7 · 0⤊ 0⤋
nageh fayez im
2007-10-05 15:41:51 · answer #7 · answered by nageh s 1 · 0⤊ 0⤋