Question

calculati (1-1pe2)(1-1pe3)(1-1pe 4)

Answer 1

$\frac{2}{2} - \frac{1}{2} = \frac{1}{2} \\ \frac{3}{3}- \frac{1}{3} = \frac{2}{3} \\ \frac{4}{4} -\frac{1}{4}= \frac{3}{4} \\ \frac{1}{2} * \frac{2}{3} * \frac{3}{4} = \frac{1}{4} =0,25$