

| Option | 6 | incorrect |
| Option | 5 | correct |
| Option | 4 | incorrect |
| Option | 2 | incorrect |
| Solution | When both 6 and 4 are in the same position of cube, 5 should be opposite to 1. | |


| Option | 6 | incorrect |
| Option | 5 | correct |
| Option | 4 | incorrect |
| Option | 2 | incorrect |
| Solution | When both 6 and 4 are in the same position of cube, 5 should be opposite to 1. | |