Find the sum of a 10 term geometric sequence when the first term is 3 and the last term is 59049

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.