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If the sum of the digits of a number is divisible by 3, then the number itself is divisible by 9.

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NCERT EXEMPLAR-NUMBER SYSTEM-Exercise (true (T) or false (F))
  1. Sum of two consecutive odd numbers is always divisible by 4.

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  2. If a number divides three numbers exactly, it must divide their sum ex...

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  3. If a number exactly divides the sum of three numbers, it must exactly ...

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  4. If a number is divisible both by 2 and 3, then it is divisible by 12.

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  5. State True or False: A number with three or more digits is divisible...

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  6. If the sum of the digits of a number is divisible by 3, then the numbe...

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  7. The LCM of two numbers is 108 and their HCF is 4. If one of the number...

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  8. The Highest Common Factor of two or more numbers is greater than their...

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  9. LCM of two or more numbers is divisible by their HCF.

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  10. LCM of two numbers is 28 and their HCF is 8. If one of the number is 4...

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  11. LCM of two or more numbers may be one of the numbers.

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  12. HCF of two or more numbers may be one of the numbers.

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  13. Every whole number is the successor of another whole number.

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  14. Sum of two whole numbers is always less than their product.

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  15. If the sum of two distinct whole numbers is odd, then their difference...

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  16. Any two consecutive numbers are coprime.

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  17. If the HCF of two numbers is one of the numbers, then their LCM is the...

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  18. The HCF of two numbers is smaller than the smaller of the numbers.

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  19. The LCM of two numbers is greater than the larger of the numbers.

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  20. The LCM of two coprime numbers is equal to the product of the numbers.

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