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Q18 of 805 Page 1

A ticket drawn at random from a bag containing tickets numbered from 1 to 40. Find the probability that the selected ticket has a number which is a multiple of 5.

We know that,


Probability of an event


Here, Number of total outcomes = 40


Favourable outcomes = 5, 10, 15, 20, 25, 30, 35, 40


⇒ No. of favourable outcomes = 8


Probability



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16

Two cubes each of volume 27 cm3 are joined end to end to form a solid . Find the surface area of the resulting cuboid

OR


A cone of height 20cm and radius of base 5cm is made up of modelling clay. A child reshapes it in form of a sphere. Find the diameter of the sphere


17

Find the value of y for which the distance between the points A(3, – 1) and B(11, y) is 10 units.

20

Find an A.P. whose fourth term is 9 and the sum of sixth and thirteenth term is 40.

21

In Figure 5, a triangle PQR is drawn to circumscribe a circle of Radius 6 cm such that the segments QT and TR into which QR is divided by the point of contact T, are of lengths 12 cm and 9 cm respectively. If the area of ∆PQR = 189 cm2, then find the lengths of sides PQ and PR.


Questions · 805
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