Question

You randomly select a month of the year. What is the probability that you select a month with 28 or 30 days in it ?

Answer 1

First we don't consider leap year
There is 1 month with 28 days= February
There are 4 months with 30 days= April, June, September, November
So the probability to select a month with 28 or 30 days is (1+4)/12 = 5/12

If the year is a leap year then the probability is 4/12

Sample Question Paper for Class 8 ICSE Maths -
http://education-help-online.blogspot.in/2014/07/sample-question-paper-for-class-8-icse.html