Write the fraction in which

(i) numerator = 5 and denominator = 13

(ii) denominator = 23 and numerator = 17

Shabana has to stitch 35 dresses. So far, she has stitched 21 dresses. What fraction of dresses has she stitched?

What fraction of an hour is 45 minutes?

How many natural numbers are there from 87 to 97? What fraction of them are prime numbers?