Handshakes
5 friends met for lunch. Each shaked hands with the others one time. How many total handshakes were there?
Three brothers Continued
Ido Elad and Yoav are brothers The sum of the ages of Ido and Elad is 20. The sum of the ages of Elad and Yoav is 15. The sum of the ages...
Three brothers
Elad, Ido and Yoav are brothers with different ages. Exactly one of the following statement is true . 1. Yoav is the oldest. 2. Ido is...
