There are 52 cards in a standard deck, from which there are 4 aces and 4 tens.
The probability of picking a ten or an ace in the first turn, is:
[tex]\frac{8}{52}[/tex]Either if a ten or an ace is taken out of the deck, there is a probability of 4/51 of picking the missing card. Then, the probability of picking a ten and an ace is:
[tex]\frac{8}{52}\times\frac{4}{51}=\frac{32}{2652}=\frac{8}{663}[/tex]