faith3087 faith3087

25-03-2022
Mathematics

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A blood bank needs 7 people to help with a blood drive. 13 people have volunteered. Find how many different groups of 7 can be formed from the 13 volunteers.

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UrsoNet UrsoNet

25-03-2022

2 groups of 7 can be formed with 3 people left over

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1+4=5 2+5=12 3+6=21 8+11=

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