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Answer:
Total ten students can feed on 6 slices of pizza with each student getting of a pizza slice
Step-by-step explanation:
Given-
Teacher wished to give of a pizza slice to each student
This means that each student will get only one slice of pizza
Now the total number of slices of pizza
Thus,
of a pizza slice to each student
total number of students
Rearranging the above equation, we get -
Where X is the number of students
Total ten students can feed on 6 slices of pizza with each student getting of a pizza slice
Sum of an infinite geometric sequence with the common ratio r, and the first term a1 is 
we notice
-2 times -1/4=1/2,
1/2 times -1/4=-1/8
so a1=-2
r=-1/4 or -0.25
so the sum is
=
=
=
=
the sum is -8/5 or -1.6
we notice
-2 times -1/4=1/2,
1/2 times -1/4=-1/8
so a1=-2
r=-1/4 or -0.25
so the sum is
the sum is -8/5 or -1.6