Find out the wrong term: 5, 27, 61, 122, 213, 340, 509

17, 14, 14, 11, 11, 8, 8, ... choose which pair of numbers comes next?

21, 9, 21, 11, 21, 13, 21, ... What number should come next?

Find the missing term: 45, 54, 47, ?, 49, 56, 51, 57, 53

Find the missing term: 5, 6, 9, 15, ?, 40

Find the missing term: 5, 2, 7, 9, 16, 25, ?

Find the missing term: 1, 1, 2, 6, 24, ?, 720

Find the missing term: 6, 13, 25, 51, 101. ?

What will come at the place of question mark ?<br>3, 7, 23, 95, ?