Elitmus Exam Numerical Ability Sequence and Series

a basketball is dropped from a height of 20 feet.it bounces back each time to a height which is one half of the height of the last bounce.how far approximatesly will the ball have to be travelled before it comes to rest?

A)30FT.
b)40
C)60
d)CANNOT B DETERMINED

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Elitmus Other Question

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in an opinion poll,78% of those asked were in favour of at least one of the three participants A,B,C.50% OF THOSE ASKED favoured A.30% favoured B.20%c.If 5% of those favoured all of the three,what percentage favoured exactly one?