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Find the addition of (2+sqrt3) and (2-sq...

Find the addition of `(2+sqrt3) and (2-sqrt3)`

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CALCUTTA BOOK HOUSE-SAMPLE QUESTIONS PAPERS-QUESTION
  1. The tens' digit of a two digit number is less by 3 than the unit digit...

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  2. The price of a diamond is ₹ 2000. The diamond is broken into two pies...

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  3. If x=3+2sqrt2, then find the value of (sqrtx -""1/sqrtx)

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  4. If a+1/b = 1 and b+1/c=1 then prove that c+1/a =1

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  5. If a, b, c be in continued proportional, then prove that a^2 b^2 c^2 (...

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  6. Prove that angles in the same segment of a circle are equal.

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  7. Prove that if two tangents are drawn to a circle from a point outside ...

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  8. ABCD is a parallelogram. A circle passing through C and D intersects A...

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  9. Construct a circle of radius 2*6cm. Take a point outside of this circl...

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  10. The length of radius of a circle is 21 cm. Determine the cfircular and...

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  11. Find the value : (tan^2 60^@+tan30^@)/(1+tan^2 60^@+tan30^@)+cos 60^@ ...

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  12. If /A + /B = 90^@ then prove that 1+(tan A)/(tan B) = "cosec"^2 B

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  13. If the angle of elevation of the top of a chimney from a point on the ...

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  14. If the angle of depression of two consecutive kilometer stones on a ro...

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  15. How many solid sphere of radius 10*5 cm each can be mad by melting a s...

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  16. To prepare a tent of shaped a right circular cone, it needs 77 sq-metr...

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  17. The external diameter of a gold - sphere is 12 cm and it is made of a ...

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  18. If x1 and x2be any two positive variables and if the arithmetic mean ...

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  19. prove thatsqrt108 -sqrt75=sqrt3

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  20. Find the addition of (2+sqrt3) and (2-sqrt3)

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