| Question | Select the number from among the given options that can replace the question mark (?) in the following series. 28, 18, 12, 8, ? | |
| Type | multiple_choice | |
| Option | 3 | incorrect |
| Option | 5 | correct |
| Option | 2 | incorrect |
| Option | 4 | incorrect |
| Solution | 28 – 10 = 18 18 – (10 – 4 = 6) = 12 12 – (6 – 2 = 4) = 8 8 – (4 – 1 = 3) = 5 28, 18, 12, 8, 5 | |
