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Simplify: (49xxz^(-3))/(7^(-3)xx10xxz^...

Simplify:
`(49xxz^(-3))/(7^(-3)xx10xxz^(-5))(z!=0)`

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NCERT EXEMPLAR-EXPONENTS AND POWERS-EXERCISE
  1. Simplify : (1/4)^(-2)+\ (1/2)^(-2)+(1/3)^(-2)

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  2. Simplify: (((-2)/3)^(-2))^(3)xx(1/3)^(-4)xx3^(-1)xx1/6

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  3. Simplify: (49xxz^(-3))/(7^(-3)xx10xxz^(-5))(z!=0)

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  4. Simplify: (2^(5)-:2^(8))xx2^(-7)

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  5. Find the value of x so that (5/3)^(-2)xx(5/3)^(-14)=(5/3)^(8x)

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  6. Find the value of x so that (-2)^(3)xx(-2)^(-6)=(-2)^(2x-1)

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  7. Find the value of x so that (2^(-1)+4^(-1)+6^(-1)+8^(-1))^(x)=1

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  8. Divide 293 by 10,00,000 and express the result in standard form.

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  9. Findthe value of x^(-3) if x=(100)^(1-4)-:(100)^(a).

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  10. By what number should we multiply (-29)^(@) so that the product become...

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  11. By what number should (-15)^(-1) be divided so that quotient may be eq...

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  12. Find the multiplicative inverse of (-7)^(-2)-:(90)^(-1).

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  13. If 5^(3x-1)-:25=125, find the value of x.

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  14. Write 39,00,00,000 in the standard form.

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  15. Write 0.000005678 in the standard form.

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  16. Express the product of 3.2xx10^(6) and 4.1xx10^(-1) in the standard fo...

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  17. Express (1.5xx10^(6))/(2.5xx10^(-4)) in the standard form.

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  18. Some migratory birds travel as much as 15,000 km to escape the extrem...

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  19. Pluto is 59, 1,30,00,000m from the sun. Express this in the standard f...

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  20. Special balances can weigh something as 0.00000001 gram. Express this ...

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