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State True or False : The square of 2.8 ...

State True or False : The square of 2.8 is 78.4.

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NCERT EXEMPLAR-SQUARE - SQUARE ROOT AND CUBE-CUBE ROOT-Exercise (state whether the statements are true (T) or false (F))
  1. State True or False : The square root of 1521 is 31.

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  2. State True or False : Each prime factor appears 3 times in its cube.

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  3. State True or False : The square of 2.8 is 78.4.

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  4. State True or False : The cube of 0.4 is 0.064.

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  5. State True or False : The square root of 0.9 is 0.3.

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  6. State True or False : The square of every natural number is always gre...

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  7. Find the cube root of 8000.

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  8. State True or False : There are five perfect cubes between 1 and 100.

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  9. State True or False : There are 200 natural numbers between 100^2 and...

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  10. The sum of the first n odd natural number is

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  11. 1000 is a perfect square.

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  12. A perfect square can have 8 as its units digit.

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  13. For every natural number m, (2m -1, 2m^2-2m, 2m^2–2m + 1) is a pythago...

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  14. All numbers of a pythagorean triplet are odd. True or false.

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  15. For an integer a, a^3 is always greater than a^2. True or false.

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  16. State True or False: If x and y are integers such that x^2 gt y^2, ...

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  17. Let x and y be natural numbers. If x divides y, then x^3 divides y^3. ...

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  18. State True or False: If a^2 =5, then a^3= 25.

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  19. Write true (T) or false (F) for the following statements: 392 is a ...

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  20. The square root of a perfect square containing n digits has .............

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