Your sock drawer has two white socks, four brown socks, and two black socks. you randomly pick a sock and put it on your left foot and then pick another sock and put it on your right foot. you leave the house with a white sock on your left foot and a brown sock on your right foot. find the probability of this occuring.

3/6   and 9/18

step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.