+0

# help with sum

0
71
2

Find \(100 - 98 + 96 - 94 + \dots + 4 - 2\)

Jul 17, 2020

#1
+21953
+1

Hint:  100 - 98  =  2

96 - 94  =  2

92 - 90  =  2

...

8 -  6  =  2

4 -  2  =  2

How many 2s do you need to add together?

Jul 17, 2020
#2
+1130
+3

we put them into groups like this 100-98=2 like hwat geno3141 said and we have 100/2=50 groups of 2 numbers of 2 so the sum is 2*50=100

Jul 18, 2020