Question
What is the value of the following expression...
2-4+6-8+10-12+14-16+...-100
2-4+6-8+10-12+14-16+...-100
Answers
Ms. Sue
2 + 6 + 14 = 22
Add the negative numbers and take it from there.
Add the negative numbers and take it from there.
Reiny
how about writing it like this:
(2-4) + (6-8) + (10-12) + .... + (98 - 100)
the value of each bracket is -2 and you have 50 such brackets, so .....
(2-4) + (6-8) + (10-12) + .... + (98 - 100)
the value of each bracket is -2 and you have 50 such brackets, so .....