| Question | Select the number from among the given options that can replace the question mark (?) in the following series. 5, 13, 22, 34, 51, 75, 108, 152, ? | |
| Type | multiple_choice | |
| Option | 230 | incorrect |
| Option | 203 | incorrect |
| Option | 209 | correct |
| Option | 290 | incorrect |
| Solution | 5 + 8 = 13 13 + 9 (8 + 1) = 22 22 + 12 (9 + 3) = 34 34 + 17 (12 + 5) = 51 51 + 24 (17 + 7) = 75 75 + 33 (24 + 9) = 108 108 + 44 (33 + 11) = 152 152 + 57 (44 + 13) = 209 5, 13, 22, 34, 51, 75, 108, 152, 209. | |
