Question

What is the probability that something with a 0.1% probability of happening will happen three times in a row?

Answer 1

Assuming each trial is independent: 0.1% = 0.001 in decimal. The probability of three in a row is 0.001^3 = 1×10^-9.

That is:
- 0.000000001 (decimal)
- 0.0000001% (percent)
- 1 in 1,000,000,000 (one in a billion).