Question

The overall percentage of passes in a certain examination is 75. If five candidates from a
certain town appear in the examination, what is the probability that at least four pass the
examination?

CLASS 12TH ICSE SAMPLE PAPER 2018-19

MATHEMATICS

Answer 1

Hey

Total number of condidates = 5

Likely chance of passing

= at least four = that means not less than 4 = 4 or more than 4

Now , likely chance = 2 ( 4 , 5 ) .

So ,


P = likely chance / total chance


P = 2 / 5


thanks :)