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Question Are there an equal number of primes occurring in every row in the table on the previous page? Which decades have the least number of primes? Which have the most number of primes?
No, the number of primes occurring in every row are not equal.
The decade 91 to 100 has least number of primes i.e. 1.
The decades having most number of primes are 1 to 10 and 11 to 20 (4 primes)