| Question | Select the related number from the given alternatives. 181: 209: : 419 : ? | |
| Type | multiple_choice | |
| Option | 470 | incorrect |
| Option | 461 | correct |
| Option | 505 | incorrect |
| Option | 472 | incorrect |
| Solution | From 182 ⇒ (14)2 – 15 = 181 and 210 ⇒ (15)2 – 16 = 209 Similarly, 420 ⇒ (21)2 – 22 = 419 and 462 ⇒ (22)2 – 23 = 461 | |
