Q. How many prime numbers are there between 1 to 20?

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Q. There are finite number of prime numbers.

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Q. Sum of two different prime number is a ____________

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Q. Difference of two distinct prime numbers is?

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Q. If a, b, c, d are distinct prime numbers with an as smallest prime then a * b * c * d is a ___________

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Q. If a, b are two distinct prime number than a highest common factor of a, b is ___________

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Q. If there exist an integer x such that x² ≡ q (mod n). then q is called ______________

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Q. If there exist no integer x such that x² ≡ q (mod n). then q is called __________

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Q. The Fermat’s little theorem for odd prime p and coprime number a is?

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Q. 5 is quardratic non-residue of 7.

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Q. 4 is quardratic residue of 7.

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Q. 8 is quardratic residue of 17.

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Q. 8 is quardratic residue of 11.

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Q. Which of the following is a quardratic residue of 11?

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Q. What is pseudo prime number?

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Q. Pseudo prime are classified based on property which they satisfy, which of the following are classes of pseudoprimes?

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Q. A Least Common Multiple of a, b is defined as __________

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Q. The LCM of two number 1, b(integer) are _________

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Q. If a, b are integers such that a > b then lcm(a, b) lies in _________

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Q. LCM of 6, 10 is?

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