Badiuddin askIITians.ismu Expert
Last Activity: 15 Years ago
Dear jee
first strip can be can be coloured by 4 ways
2nd strip can be can be coloured by 3 ways
3rd strip can be can be coloured by 3 ways
4th strip can be can be coloured by 3 ways
5th strip can be can be coloured by 3 ways
total ways =4*3*3*3*3=324
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Badiuddin