There are 25 species of trees, each with a known abundances. The question is how many possible ways to randomly select one tree there are.
We should calculate the number of combinations. Combinations, because we select item/s from a collection. In this case, when we select only one item, the combination is also a permutation. From set of n objects we select r. In our case: n=25, r=1.
The equation is: n!/r!(n-r)!= 25!/1!*24!=25*24!/24!=25
There are 25 different outcomes (events).
Answer:
C
Step-by-step explanation:
y= 60(2)+10
y=130
y=65(2)
y=130
Answer:
Step-by-step explanation:
180
Jus go a thru z and you’ll be fine
