Question

What is the average(arithmetic mean) of the positive

integers from 1 to 50, inclusive? Note: please tell

the shortcut for this PSAT question.

Answer 1

sum of n terms (first+last)*n/2
average of n terms is (first+last)/2

Answer 2

wait

Answer 3

so

Answer 4

50+1

Answer 5

51

Answer 6

/2

Answer 7

yes

Answer 8

25.5?

Answer 9

is that all?

Answer 10

yes The sum of first 50 terms inclusive is an Arithmetic progression

Answer 11

ahh

Answer 12

ty