[填空题]
Adam has an unbiased octahedb-lbv aoeu(0aj,qr+ pk/.sy 1ral (eight faced) die which has the numbers/-s69jnvp f zs5yri (v 1,2,3,4,5,6,svyp r5/6 9nzfi(s-j v7,8 .
Bella has an unbiased pentahedral (five faced) die which has the numbers 1,3,5,7,9 .
1. Complete the Venn diagram with the numbers written on Adam's die (A) and Bella's die (B) .
2. Find $n\left(A^{\prime} \cup B^{\prime}\right)$ .
Adam and Bella are each going to roll their die once only. Charlie says the probability that each die will show the same number is $\frac{1}{10}$ .
3. Determine whether Charlie is correct. Give a reason.
