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A box contains 20 balls bearing numbers ...

A box contains 20 balls bearing numbers   -   1, 2, 3, 4, ..., 20.  
A ball is drawn at random from the box. What is the probability that the number on the ball is divisible by 7?

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Verified by Experts

The correct Answer is:
`(1)/(10)`
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EDUCART PUBLICATION-SAMPLE PAPER 4-PART-A(SECTION-I)
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  2. Find the zeros of the polynomial p(x) = x^2 - 7x + 6

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  7. A man goes 15 m due west and then 8 m due north. How far is he from...

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  8. Prove that 4tan^2 A - 4sec^2 A = - 4

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  9. If tan A = 3/4 , find the value of sin A.

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  10. If the perimeter of a semicircular protractor is 36cm, find its diamet...

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  11. The chord of a circle of radius 10cm subtends a right angle at its cen...

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  12. A box contains 20 balls bearing numbers   -   1, 2, 3, 4, ..., 20.   ...

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  13. The mean of twenty observations is 15. If two observations 3 and 14 ar...

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  14. If the mean and mode of a discrete data is 6 and 9, find the median of...

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  15. Write the number of zeros for a polynomial p(x) whose graph is given i...

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  16. Write a pair of lines which has the unique solution x = - 1 , y = 3

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  17. The quadratic equation 2x^2 + px + 3 = 0 has two equal roots. Find the...

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  18. Construct a tangent to a circle of radius 4cm from a point which is at...

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  19. The perimeters of two similar triangles are 30 cm and 20 cm respective...

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  20. In a circle of radius 7 cm, tangent PT is drawn from a point P such th...

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