Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter- cluster that is different.

| Question | Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter- cluster that is different. | |
| Type | multiple_choice | |
| Option | MLY | incorrect |
| Option | DGK | incorrect |
| Option | QFW | incorrect |
| Option | ENR | correct |
| Solution | 13 + 12 = 25 M L Y 4 + 7 = 11 D G K 17 + 6 = 23 Q F W 5 + 14 = 19 E N R 18 | |