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A box contains 90 discs, numbered from 1...

A box contains 90 discs, numbered from 1 to 90. If one disc is drawn at random from the box,find the probability that it bears a prime number < 23.

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X BOARD PREVIOUS YEAR PAPER ENGLISH-X Boards-All Questions
  1. 4 A dice is thrown once, then the probability of getting an odd prime ...

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  2. Find the probability of getting an even number when a die is thrown

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  3. A box contains 90 discs, numbered from 1 to 90. If one disc is drawn a...

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  4. In Fig. 3, the area of triangle ABC (in sq. units) is :

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  5. If s e c4A=cos e c(A-20^@) , where 4A is an acute angle, find the ...

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  6. Solve the following quadratic equation : 4sqrt3x^(2)+5x-2sqrt3=0

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  7. Find the sum of all three digit natural numbers, which are divisible b...

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  8. In the given figure, a circle inscribed in a triangle ABC, touches the...

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  9. Find the value of K if the point (K,3), (6,-2) and (-3,4) are collin...

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  10. Prove that the parallelogram circumscribing a circle is a rhombus.

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  11. E is a point on the side AD produced of a parallelogram ABCD and BE ...

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  13. For what value of k, are the roots of the quadratic equation kx (x-2) ...

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  14. Find the number of terms of the AP 18, 31/2, 13, ....., -99/2 and find...

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  15. Use Euclid's division lemma to show that the square of any positive ...

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  16. The horizontal distance between two poles is 15 m. The angle of depres...

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  17. Show that the points (7, 10), (-2, 5), and (3, -4) are the vertices of...

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  18. Find the ratio in which the y-axis divides the line segment joining th...

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  19. In the given figure, AB and CD are two diameters of circles ( with cen...

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