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Which of the following is a prime number...

Which of the following is a prime number? 203         (b)  139        (c)  115    (d)  161

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RD SHARMA-PLAYING WITH NUMBERS-All Questions
  1. The number of primes between 90 and 100 is 0        (b)   1        ...

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  2. Which of the following numbers is a perfect number? 16       (b)...

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  3. Which of the following is a prime number? 203         (b)  139     ...

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  4. The total number of even prime numbers is 0      (b)  1      (c)   ...

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  5. Which one of the following is a prime number? 161      (b)  221    ...

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  6. The least prime is 1         (b)   2         (c)  3       (d)  5

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  7. Which of the following numbers is divisible by 24?

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  8. Which of the following numbers is divisible by 4? 8675231        ...

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  9. Which of the following numbers is divisible by 6? 7908432       ...

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  10. Which of the following numbers is divisible by 8? 87653234         ...

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  11. Which of the following numbers is divisible by 9? 9076185          ...

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  12. Which of the following numbers is divisible by 11? 111111    (b)...

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  13. If 1*548 is divisible by 3, then * can take the value 0         (b...

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  14. 5 * 2 is a three digit number with * as a missing digit. If the num...

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  15. What least value should be given to * so that the number 6342 * 1 i...

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  16. What least value should be given to * so that the number 653 * 47  ...

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  17. What least value should be given to * so that the number 653 * 47 i...

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  18. What least value should be given to * so that the number 63576 * 2 ...

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  19. Which one of the following numbers is exactly divisible by 11? 2356...

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  20. If 1 * 548 is divisible by 3, which of the following digits can rep...

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