The Probability of a 70% chance event occuring is 70%. Easy peasy
The probability of a 7% chance occuring at least once in 10 try’s is 100% – [The chance that it doesn’t]
The chance you try the 7% event 10 times and never “hit” is 93%^10=48% ; which means you have a 52% chance of hitting
So in other words: A Single 70% chance is 70%, but Ten 7% chances is only 52% which is very different.
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