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Write True or False If mean of the numb...

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If mean of the numbers 7,9,x,12,y,17 is 11 then x+y = 30.

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UNITED BOOK HOUSE-VIDYASAGAR VIDYAPITH MIDNAPORE-EXERCISE
  1. Write True or False If sinA + sinB = 2, (0leAle90^@,0leBle90^@) then c...

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  2. Write True or False The volume of the largest solid cone that can be c...

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  3. Write True or False If mean of the numbers 7,9,x,12,y,17 is 11 then x...

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  4. In 1 year if the ratio of principal and amount is 8:9 , then calculate...

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  5. What should be added to each of 12,22,42,72 to make the sums proportio...

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  6. In a business , A,B,C invest Rs 500 , Rs 450 and Rs 700 respectively. ...

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  7. If x^2+y^2 alpha xy then show that x+y alpha x-y.

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  8. Length of two chords of a circle with centre at O are 6 cm and 8 cm. I...

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  9. In triangleABC, AB=AC. If we draw a circle with diameter AB, the circl...

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  10. The lengths of radii of two circles are 8 cm and 3 cm and the distance...

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  11. If cos^2 theta-sin^2 theta= 1/2 then cos^4 theta-sin^4 theta=?

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  12. If sec 5 theta= cosec(theta+36^@) and 5 theta is a positive acute angl...

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  13. If the lengh of diagonal of a cube is 6 cm then find the total surface...

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  14. The length of radius of a right circular cylinder is decreased by 50% ...

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  15. If ui = (xi-25)/10 sumfiui = 20 and sumfi = 100, find barx.

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  16. At present the sum of the number of students in all the secondary inst...

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  17. Pradipbabu and Aminabiib started a business jointly by investing Rs 24...

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  18. Solve : (x+3)/(x-3)+(x-3)/(x+3)= 2 1/2,x!=+-3.

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  19. The spedd of a boat in still water is 8 km/hr. if the boat can go 15...

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  20. If x= (sqrt7+sqrt3)/(sqrt7-sqrt3) and xy = 1, find the value of (x^2+3...

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