CBSE Class 11-science Answered
Let A={x|x be a prime no. and x
Asked by ADITI BHATNAGAR | 03 Jan, 2013, 10:39: PM
Expert Answer
as there are 10 prime no. which are less than 30.so here we have 10 options from which we need 2 numers 1 for numerator and 1 for denominator,so
no. of different rational numbers whose denominator and numerator belongs to A=10 C2
=45
Answered by | 04 Jan, 2013, 10:46: PM
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