Answer:
(a) 0.0001 or 0.01%
(b) 0.01 or 1%
Step-by-step explanation:
Since there are 10 possible numeric digits (from 0 to 9), and there is only one correct digit, there is a 1 in 10 change of getting each digit right.
The probability that if you forget your PIN, then you can guess the correct sequence
(a) at random:

(b) when you recall the first two digits.

Answer:
60°
Step-by-step explanation:
∠B=(240-120)/2=120/2=60°
Answer:
0.04578
Step-by-step explanation:
Hope this helps somewhat.
1. The slope is -2/5 not 3-/10