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The sum of the ages of Ruth and her mother is 77 years. 2019-11-06
Lydia pose la question :
The sum of the ages of Ruth and her mother is 77 years. The difference in their ages is 27 years. How old is each?
Penny Nom lui répond.
How many handshakes take place? 2008-06-26
Peter pose la question :
Eight people of different heights are at a party. Each person decides to only shake hands with people shorter than him/herself. How many handshakes take place? My math book says it is 0. Is it wrong? If so, what is the answer?
Harley Weston lui répond.
 
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