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Q1. For 2^p - 1 to be prime (Mersenne prime), p must be:
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Q2. The multiplicative identity is:
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Q3. Identify the missing number: 9, 16, 25, 36, ?, 64
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Q4. Let N be a composite number. If N can be written as the product of two distinct prime numbers, and the sum of these prime numbers is 12, find N.
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Q5. On a number line, if $A$ is at $-5.2$ and $B$ is at $3.8$, point $C$ divides the segment $AB$ in the ratio $3:2$. What is the coordinate of $C$?
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Q6. A number leaves a remainder of 2 when divided by 3, 4 when divided by 5, and 6 when divided by 7. What is the remainder when this number is divided by 105?
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Q7. If a ≡ 2 (mod 5) and b ≡ 3 (mod 5), what is a*b (mod 5)?
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Q8. The GCD of two numbers is 12 and their LCM is 72. If one of the numbers is 24, find the other number.
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Q9. The product of 9 and 1 is:
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Q10. Which of the following is an even number?
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Q11. What is the residue class of 100 modulo 10?
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Q12. Identify the first term of the geometric sequence 10, 5, 2.5, 1.25, ...
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Q13. What number comes next in the series: 2, 5, 11, 23, 47, ?
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Q14. What is 12 multiplied by 5?
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Q15. What is i^5 equal to?
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Q16. The sum of two odd numbers is always:
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Q17. Find the value of 23 (mod 7).
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Q18. Which of the following is not a perfect square?
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Q19. What is the sum of the proper divisors of 13?
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Q20. The product of an even number and an odd number is always:
