Jennifer arranged for a party and had a basket full of strawberries. She ate 5 strawberries before the party and gave a friend 3. Eight girls came to the party. First girl took one strawberry, second one took three strawberries, third took five strawberries and so on. The basket was empty after the last person took hers. How many strawberries did Jennifer had?
First Jennifer ate 5, gave her friend 3.
Eight girls took in odd digit order as 1, 3, 5, 7, 9, 11, 13, 15.
So totally, 5 + 3 + 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 = 72.
Finally Jennifer had 72 strawberries.
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