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3) A box contains 40 discs which are numbered from 1 to 40 and mixed thoroughly. If one disc is drawn
at random from the box,

By Kinsley

3) A box contains 40 discs which are numbered from 1 to 40 and mixed thoroughly. If one disc is drawn
at random from the box, find the probability that the disc drawn is:
(i) a perfect square number
a number divisible by 5.​

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Kinsley

In an equilateral triangle all side of a triangle are equal. true and false​

If tanA = 30°, prove that
[tex] \tan2a = \frac{2 \tan a }{1 – { \tan}^{2} a} [/tex]
​

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