Question

Write the set building form of $A=\{1+\frac{1}{8},\frac{1}{27},\frac{1}{64},\frac{1}{125}\}$ If $A=\{2,3,6\}$, then find $P\left(A\right)$?

Answer 1

In set builder form,

$A=\{n:\frac{1}{n^3},n\in N\}$

$P\left(2\right)\frac{1}{8},$ $P\left(3\right)=\frac{1}{27},$ $P\left(6\right)=\frac{1}{196}$