7 11 19 35 67 131 259 515... Double the last number then take away 3 for the next number.
7+4=11 11+8=19 19+16=35 35+32=67 so the next no. is 67..............
67 7 + 4 = 11 11 + 8 = 19 19 + 16 = 35 35 + 32 = 67 67 + 64 = 131 ...
35. 5+2^1=5+2=7 7+2^2=7+4=11 11+2^3=11+8=19 19+2^4=19+16=35
11 - 7 = 4 19 - 11 = 8 35 - 19 = 16 67 - 35 = 32 Getting the picture? Just double the amount added on the previous one.
67
Note the difference between each pair is doubled compared to the previous pair. 5 ; 7 = 2^1 7 ; 11 = 2^2 11 : 19 = 2^3 19 : 35 = 2^4 So 35 : x = 2^5 = 32 So 35 + 32 = 67 .
67
Reasoning: the difference between each number doubles up each time 7 (+4) 11 (+8) 19 (+16) 35 (+32)67
One rule for this pattern is to add twice the previous value added 4 + 1 = 5 5 + 2×1 = 5 + 2 = 7 7 + 2×2 = 7 + 4 = 11 11 + 2×4 = 11 + 8 = 19 Continuing the next numbers would be: 19 + 2×8 = 19 + 16 = 35 35 + 2×16 = 35 + 32 = 67 ...
67
66 and 4/4's.
The factors of 7,315 are 5,7,11 and 19. 5 * 7 * 11 * 19 = 7,315. For all factors besides the prime factors, simply multiply each combination of prime factors by each other. 5*7=35 5*11=55 5*19=95 7*11=77 7*19=133 11*19=209 5*7*11=385 5*7*19=665 5*11*19=1,045 7*11*19=1,463 Finally, 1 and 7,315 are also factors of 7,315.