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Explain why 7xx11xx13+13 and 7xx6xx5xx4x...

Explain why `7xx11xx13+13` and `7xx6xx5xx4xx3xx2xx1+5` are composite numbers.

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R G PUBLICATION-REAL NUMBERS-EXERCISE
  1. Given that HCF (306,657)=9,find LCM (306,657)

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  2. Check whether 6^n can end with the digit 0 for any natural number n.

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  3. Explain why 7xx11xx13+13 and 7xx6xx5xx4xx3xx2xx1+5 are composite numbe...

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  4. There is a circular path around a sports field.Sonia takes 18 minutes ...

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  5. Prove that sqrt5 is irrational.

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  6. Prove that 3+2sqrt5 is irrational.

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

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

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

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

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

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

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

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

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

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