Answer:
To calculate probability you have to understand that P = favorable cases / possible cases. So, your probability is 7/10 (Consider all the cards, have the same probability when you pick one).
Step-by-step explanation:
Which are your favorables cases
card 4, card 5, card 6, card 7, card 8, card 9, card 10
Which are you possible cases
The 10 cards.