Please help me solve

Hmmm
Quantitative reasoning still in Vogue
E don tay wey I see this questions ooh

Take the square root of the two top numbers then add it together to get the down one
1..) 12
2) 121
3)25
4) 9
5)13
6) 144
7) 14
8.) 16
10) 4

Pls help me solve these questions.

1) 10 unbiased coins are tossed simultaneously. Find the probability of obtaining;
* exactly 6 heads
* at least 8 heads
* no heads
* not more than 3 heads
* at least one head
* at least 4 heads

2) A six sided dice is rolled twelve times; what’s the probability of getting a 4, 5 times

3) A merchant file of 20 accounts contain 6 diliquent account and 14 non diliquent account, an auditor randomly select 5 of this account for examination;
* what is the probability that the auditor find exactly two diliquent account
* find the expected number of diliquent account in the sample selected.
* find the variance of the distribution