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Prove that the following are irrationals...

Prove that the following are irrationals:(ii)`7sqrt5`

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R G PUBLICATION-REAL NUMBERS-EXERCISE
  1. Prove that 3+2sqrt5 is irrational.

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  2. Prove that the following are irrationals:(i)1/sqrt2

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  3. Prove that the following are irrationals:(ii)7sqrt5

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  4. Prove that the following are irrationals:(iii)6+sqrt2

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  5. Without actually performing the long division,state whether the follow...

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  6. Without actually performing the long division,state whether the follow...

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  7. Without actually performing the long division,state whether the follow...

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  8. Without actually performing the long division,state whether the follow...

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  9. Without actually performing the long division,state whether the follow...

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  10. Without actually performing the long division,state whether the follow...

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  11. Without actually performing the long division,state whether the follow...

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  12. Without actually performing the long division,state whether the follow...

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  13. Without actually performing the long division,state whether the follow...

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  14. Without actually performing the long division,state whether the follow...

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  15. The following real numbers have decimal expansions as given below.In e...

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  16. The following real numbers have decimal expansions as given below.In e...

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  17. The following real numbers have decimal expansions as given below.In e...

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  18. If a,b are coprime then a^2,b^2 are -- a) prime b)Coprime c)Composite ...

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  19. The product of the HCF and LCM for the number 50 and 20 is a)20 b)10 ...

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  20. The LCM of two numbers is 1200 which of the following cannot be their ...

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