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For any rational number x, x + (-1) = -x...

For any rational number `x`, `x + (-1) = -x.`

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NCERT EXEMPLAR-RATIONAL NUMBERS -Exercise (true(T) or false (F))
  1. 1 is the only number which is its own reciprocal.

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  2. -1 is not the reciprocal of any rational number.

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  3. For any rational number x, x + (-1) = -x.

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  4. For rational numbers x and y, if x lt y then x - y is a positive ratio...

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  5. If x and y are negative rational numbers, then so is x + y.

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  6. Between any two rational numbers there are exactly ten rational number...

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  7. State True or False Rational numbers are closed under addition and mu...

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  8. state true of false Subtraction of rational number is commutative.

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  9. -(3)/(4) is smaller than -2.

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  10. 0 is a rational number.

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  11. All positive rational numbers lie between 0 and 1000.

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  12. The population of India in 2004 - 05 is a rational number.

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  13. There are countless rational numbers between (5)/(6) and (8)/(9).

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  14. The reciprocal of x^(-1) is (1)/(x).

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  15. The rational number (57)/(23) lies to the left of zero on the number l...

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  16. The rational number (7)/(-4) lies to the right of zero on the number l...

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  17. The rational number (-8)/(-3) lies neither to the right nor to the lef...

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  18. The rational numbers (1)/(2) and -1 are on the opposite sides of zero...

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  19. Every fraction is a rational number.

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  20. Every integer is a rational number.

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