A linear pattern.
They are 7, 10, 13, 16 and 19.
8/19 + 7/13 = 237/247
There is an interval of 3 between the numbers 1+3=4 4+3=7 7+3=10 10+3=13 13+3=16 16+3=19 19+3=22 22+3=25
2n + 19 = -7 2n = -7 - 19 2n = -26 n= -13
A linear pattern.
13(13) into 0(7) dump 7 6(13) into 0(7) fill 13 13(13) into 6(7) dump 7 12(13) into 0(7) dump 7 5(13) into 7 fill 13 13(13) into 5(7) dump 7 11(13) into 0(7) dump 7 4(13) into 0(7) fill 13 13(13) into 4(7) left with 10/13 7(7) into 0(19) fill 7 7(7) into 7(19) fill 7 7(7) into 14(19) 19(19) into 5(7) dump 7 17(19) into 0(7) left with 10(19)
They are 7, 10, 13, 16 and 19.
1, 7, 13, 19, 91, 133, 247, 1729 The prime factors are 7, 13, 19
7 x 13 x 19 = 1729
21 and 13. The pattern is t(n) = (-n4 + 10n3 - 23n2 + 38n - 12)/12
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...
7
They are 7, 10, 13, 16 and 19.
8/19 + 7/13 = 237/247
There is an interval of 3 between the numbers 1+3=4 4+3=7 7+3=10 10+3=13 13+3=16 16+3=19 19+3=22 22+3=25
7 11 13 17 19