Recent questions tagged nielit2017-scientistb-cs

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2 answers
1
What is the maximum number of distinct handshakes that can happen in the room with $5$ people in it?$15$$10$$6$$5$
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2 answers
3
The present ages of three persons in proportions $4:7:9$. Eight years ago, the sum of their ages was $56$. Find their present ages (in years).$8,20,28$$16,28,36$$20,35,45...
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