| Question | Select the number from among the given options that can replace the question mark (?) in the following series. 24, 48, 51, 204, 209, ? | |
| Type | multiple_choice | |
| Option | 1047 | incorrect |
| Option | 215 | incorrect |
| Option | 1254 | correct |
| Option | 416 | incorrect |
| Solution | 24, 24 × 2 = 48, 48 + 3 = 51, 51 × 4 = 204, 204 + 5 = 209, 209 × 6 | |
