CAT 2020 Slot 2 Question Paper

Instructions

Twenty five coloured beads are to be arranged in a grid comprising of five rows and fiveĀ columns. Each cell in the grid must contain exactly one bead. Each bead is coloured eitherĀ Red, Blue or Green.Ā While arranging the beads along any of the five rows or along any of the five columns, theĀ rules given below are to be followed:

1. Two adjacent beads along the same row or column are always of different colours.
2. There is at least one Green bead between any two Blue beads along the same row orĀ column.
3. There is at least one Blue and at least one Green bead between any two Red beadsĀ along the same row or column.

Every unique, complete arrangement of twenty five beads is called a configuration.

Question 37

The total number of possible configurations using beads of only two colours is:


Correct Answer: 2

Solution

There are only 2 configurations possible

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