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What should be added to each of 6,15,20 and 43 to make the sums proportional?

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UNITED BOOK HOUSE-DAULATPUR DALUICACHA BHARATI VIDYALAYA-EXERCISE
  1. সরল করো : (sqrt5)/(sqrt3 + sqrt2) – (3sqrt3)/(sqrt2 + sqrt5) + (2sqrt2...

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  2. Find the value of x for which the points (x, – 1), (2, 1) and (4, 5) a...

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  3. What should be added to each of 6,15,20 and 43 to make the sums propo...

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  4. If x/(lm-n^2)=y/(mn-l^2)=z/(nl-m^2), then show that lx+my+nz=0

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  5. Prove that opposite angles of a cyclic quadrilateral are supplementary

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  6. Prove that the front angle formed at the centre of a circle by an arc,...

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  7. Two circles interest at A and B. P is a point on produced BA. PT and P...

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  8. AB and CD are two chords of a cricle. Extended BA and CD intersect at ...

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  9. Draw a triangle ABC whose BC = 5cm, BA = 5.5 cm and angleABC = 70^@ dr...

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  10. Geometrically calculate the value of sqrt(23). (Only traces of constru...

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  11. Find the value of cot^2 30^@-2cos^2 60^@- 3/4 sec^2 45^@-4sin^2 30^@.

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  12. If angleA+angleB = 90^@, show that 1+ (tan A)/(tan B) = sec^2A.

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  13. If 5 sin^2 theta+4 cos^2 theta = 9/2 , find the value of tan theta.

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  14. From a point on the roof of five storied building the angle of elevati...

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  15. A man standing in the midst of a field observes, a flying bird in his...

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  16. The length of the base diameter of a wooden toy of conical shape is 10...

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  17. The length and breadth of a rectangular field of the village are 20m a...

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  18. The length of outer an inner diameter of a right circular cylindrical ...

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  19. If the mean of the following frequency distribution table is 24 then f...

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  20. Calculate the median of the following data

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