Probability that a random chosen three digit number has exactly 3 factors is
A
2225
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B
7900
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C
1300
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D
4900
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Solution
The correct option is B7900 A number has exactly 3 factors if the number is square of a prime number ,
Squares of 11,13,17,19,23,29,31 are 3 digit numbers
=> Required probability =7900