A new room is to be decorated by using three colours. The colours must be chosen from a group of seven colours, numbered - 1, 2, 3, 4, 5, 6 and 7 according to the following conditions : I. If 1 or 2 is chosen, the other must also be chosen. II. 3 and 4 cannot be chosen together. III. Either 1 or 3 or both, must be chosen. If '5’ is chosen, which of the following pair of colours could also be chosen?

A new room is to be decorated by using three colours. The colours must be chosen from a group of seven colours, numbered - 1, 2, 3, 4, 5, 6 and 7 according to the following conditions : I. If 1 or 2 is chosen, the other must also be chosen. II. 3 and 4 cannot be chosen together. III. Either 1 or 3 or both, must be chosen.

If '5’ is chosen, which of the following pair of colours could also be chosen?

1). 1 and 3
2). 1 and 6
3). 2 and 3
4). 3 and 6

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