Math & time

2.3.4.1
3.b.1.a
1.2.3.4
4.1.2.c
Find a,b,c

0.0.0=0^6
0.0.0.0=0^24
0.0.=0²
0.0.0.0.0=?

Derived general formula for quadratic equation. Using c.s.m

Students finishing 2A Math:

22% have a math average  80%,

24% have a STAT 230 mark  80%,

20% have an overall average  80%,

14% have both a math average and STAT 230  80%,

13% have both an overall average and STAT 230  80%,

10% have all 3 of these averages 80%,

67% have none of these 3 averages 80%.

Find the probability a randomly chosen math student finishing 2A has math and overall averages both  80% and STAT 230  80%.