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Explain why 19xx23xx29+17 is a composite...

Explain why `19xx23xx29+17` is a composite number ?

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BEYOND PUBLICATION-REAL NUMBERS-EXERCISE
  1. Find the LCM and HCF of the following integers by applying the prime f...

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  2. Find the LCM and HCF of the following integers by applying the prime f...

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  3. Explain why 19xx23xx29+17 is a composite number ?

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  4. How will you show that (31xx37xx41xx3)+(31xx37xx41xx5) is a composite...

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  5. Write the following rational numbers in their decimal form and also st...

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  6. Write the following rational numbers in their decimal form and also st...

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  7. Write the following rational numbers in their decimal form and also st...

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  8. Write the following rational numbers in their decimal form and also st...

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

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

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

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

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  13. Write the decimal expansion of the following 17/25

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  14. Write the decimal expansion of the following 31/(2^2xx5^2)

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  15. Write the decimal expansion of the following 643/(3^2xx5^2)

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  16. Write the decimal expansion of the following 134/110

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  17. Prove that the following are irrational. (ii) sqrt3+sqrt5

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  18. Prove that the following are irrational. sqrt3

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  19. Prove that the following are irrational. 7+sqrt2

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  20. Prove that the following are irrational. 3sqrt2

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