Home > PC > Chapter 2 > Lesson 2.1.2 > Problem 2-30
2-30.
Brian has the following sums to find: Homework Help ✎
1 + 3
1 + 3 + 5
1 + 3 + 5 + 7
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1 + 3 + 5 + … + 101
Find a shortcut so that he will not have to add the last sum by hand.
1 + 3 = 4 or 22 (How many terms are in the sum?)
1 + 3 + 5 = 9 or 32 (How many terms are in the sum?)
1 + 3 + 5 + 7 = 16 or 42 (How many terms are in the sum?)
(How many terms are in the final sum?)