self Maths Puzzle

2, 5, 12, 31, 86,??,??

Read Solution (Total 1)

2, 5, 12, 31, 86,??,??

2, 5, 12, 31, 86,249, 736

as 5= 2*3-1
12= 5*3-3
31= 12*3-5
86= 31*3-7
249= 86*3-9 = 258-9
736 = 249*3 -11 = 747-11
12 years agoHelpfull: Yes(2) No(1)

self Other Question

4, 17, 9, 20, 10, 19, 7, ?, ?, ?, ? 7, 10, 11, 13, 17, 18, ?, ?