Tom has 4 cards . Each card has a different number written on it . The totals of any three cards are -8.5 , -6.5 , -5.5 , -3.5 .
What is the number on the card with the largest value ?
Tom has 4 cards . Each card has a different number written on it . The totals of any three cards are -8.5 , -6.5 , -5.5 , -3.5 .
What is the number on the card with the largest value ?
Let the 'i'th card have written on it.
Then
Adding all the equations above gives us and thus .