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The least prime number is 0            ...

The least prime number is 0              (b)   1           (c)   2           (d)  3

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RS AGGARWAL-NUMBER SYSTEM-All Questions
  1. The largest digit in the number is 5            (b)   7           ...

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  2. Which of the following is a factor of the given number? 2          ...

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  3. The least prime number is 0              (b)   1           (c)   2...

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  4. Consider the following statements: (I) If x and y are composite number...

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  5. The number of prime numbers between 0 and 50 is 14          (b)...

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  6. The prime numbers dividing 143 and leaving a remainder of 3 in each ca...

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  7. The sum of the first four primes is (a) 10         (b) 11         (...

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  8. The sum of all the prime numbers from 1 to 20 is 75         (b)...

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  9. A prime number N, in the range 10 to 50, remains unchanged when its...

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  10. The remainder obtained when any prime number greater than 6 is divi...

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  11. Which of the following is not a prime number? 21           (b)  23 ...

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  12. Which of the following is a prime number 19          (b)  20      ...

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  13. Which of the following is a prime number? (a) 115       (b) 119    ...

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  14. Which of the following is a prime number? (a) 143       (b) 289    ...

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  15. The smallest value of natural number n, for which 2n + 1 is not a p...

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  16. The smallest three-digit prime number is 101          (b)  103    ...

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  17. How many of the integers between 110 and 120 are prime numbers? 0  ...

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  18. Four prime numbers are arranged in ascending order. The product of ...

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  19. The sum of three prime numbers is 100. If one of them exceeds anoth...

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  20. Which one of the following is a prime number? 161          (b)   22...

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