Answer:
20 groups
Step-by-step explanation:
The number of different groups possible to choose from would be the combination because order doesn't matter.
Ways of choosing r things from n total things in combination is given by:
Where
n ! = n * (n-1) * (n-2) * ....
So here we use
n = 6
r = 3
substituting in formula we get:
So, 20 groups are possible
72.64°
Tan θ 16/5
θ= tan-1 (16/5)
=72.64°
1/8 = 0.125
1/9 = 0.1
2/3 = 0.6
4/7 = 0. 571428
3/10 = 0.3
5/3 = 1.6
9/5 = 1.8
5/6 = 0.83