The chart given below indicates the annual sales tax revenue collections (in rupees in crores) of seven states from 1997 to 2001.
The values given at the top of each bar represents the total collections in that year
If for each year, the states are ranked in terms of the descending order of sales tax collections, how many states do not change the ranking more than once over the five years?
We have to consider the ranking of that state that doesn't change throughout or changes only once.
The rankings of the states are as follows:
So, the states West Bengal, Tamil Nau, Maharashtra, Karnataka and Andhra Pradesh do not change their rankings more than once. There are 5 states in total under the criteria.
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