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If the rate of increase in population is...

If the rate of increase in population is r% per year, the population after n years is p, find the population that was n years before.

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UNITED BOOK HOUSE-SUGGESSTION OR MADHYAMIK PARIKSHA-EXERCISE
  1. Write True or False: Median of 3.5,7.5,9.5,2.5,6.5,5.5 is 6.

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  2. What is the rate of simple interest per annum, when the interest of so...

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  3. If the rate of increase in population is r% per year, the population a...

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  4. If x= 5+2sqrt6 then find the value of sqrtx+1/sqrtx.

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  5. If one of the common root of the quadracti equations x^2+bx+12=0 and ...

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  6. If x^2+y^2+z^2= xy+yz+zx then find the value of (x+y):z.

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  7. If 1/x-1/y alpha 1/(y-x), show that x alpha y.

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  8. Ratio of the area of two similar triangle is 16:25. find the ratio of...

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  9. Radii of two circles are 2 cm and 3 cm and the distance between the ce...

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  10. AOB is a diameter of a circle having centre.O. C is any point on it. I...

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  11. In triangle ABC, AB = (2a-1)cm,AC = 2sqrt(2a)cm, BC = (2a+1)cm, find ...

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  12. If the volume and lateral surface of a right circular cone are numaric...

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  13. If the length of radius of a sphere is increased by 50%, then how much...

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  14. If the height of two right circular cylinder are in the ratio of 1:2 a...

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  15. The length of two adjacent walls of a room are 12m and 8 m respectivel...

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  16. Find the minimum value of (9 tan^2 theta+4 cot^2 theta) when 0^@lethet...

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  17. Find the value of (2 sin^2 63^@+1+2sin^2 27^@)/(3cos^2 17^@-2+3cos^2 7...

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  18. If tan alpha.tan2alpha = 1 then find the value of cos2alpha.

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  19. If 0^@lethetale90^@ then show that sin theta+ cos theta>1.

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  20. If the mean of 7,(x-3),10,(x+3) and (x-5) is 15, then find the median ...

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