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Question
If A is the 6th prime number and B is the 9th prime number, then what is B - A?
- 10
- 10
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Solution
The correct option is A 10
The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23 and 29.
The 6th prime number is 13 and the 9th prime number is 23.
So, A = 13 and B = 23.
⇒ B - A = 23 - 13 = 10
The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23 and 29.
The 6th prime number is 13 and the 9th prime number is 23.
So, A = 13 and B = 23.
⇒ B - A = 23 - 13 = 10
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