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The smallest 4-digit number having three...

The smallest 4-digit number having three different digits is

A

1102

B

1012

C

1020

D

1002

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NCERT EXEMPLAR-NUMBER SYSTEM-Exercise (Choose the correct answer)
  1. Which of the following numbers in Roman numerals is incorrect?

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  2. The largest 5-digit number having three different digits is

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  3. The smallest 4-digit number having three different digits is

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  4. Number of whole numbers between 38 and 68 is

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  5. The product of successor and predecessor of 999 is

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  6. The product of a non-zero whole number and its successor is always

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  7. A whole number is added to 25 and the same number is subtracted from 2...

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  8. Which of the following is not true?

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  9. By using dot (*) patterns, which of the following numbers can be arran...

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  10. Which of the following statements is not true?

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  11. Which of the following statements is not true?

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  12. The predecessor of 1 lakh is

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  13. The successor of 1 million is

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  14. Number of even numbers between 58 and 80 is

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  15. Sum of the number of primes between 16 to 80 and 90 to 100 is

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  16. Which of the following statements is not true?

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  17. The number of distinct prime factors of the largest 4-digit number is

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  18. The number of distinct prime factors of the smallest 5-digit number is

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  19. The sum of the prime factors of 1729 is

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  20. The greatest number which always divides the product of the predecesso...

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