3×5, 5×7, 7×11, 11×13, 13×17, ( )
A: 17×23
B: 17×19
C: 17×21
D: 17×25
A: 17×23
B: 17×19
C: 17×21
D: 17×25
举一反三
- P99 3.(1)(3)(5)(7)(9)(11)(13)(15)(17)(19)(21）（23）（25)(27)(29）（31）（33）（35）
- 5、A(:) = 1:2:24A =1 5 9 13 17 213 7 11 15 19 23
- 40 23 ( ) 6 11 A: 7 B: 13 C: 17 D: 19
- V={7, 2, 3, 11, 17, 5, 19, 13} After two scan exchange of V, V[6] = V={7, 2, 3, 11, 17, 5, 19, 13}，对V进行两次扫描交换后V[6] =
- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25