Question

in a game a person wins if he gets a sum greater than 20 in four throws of die . In three throws he gets 6,5,4 what will he get in the fourth throw to win the game​

Answer 1

Given:

• in a game a person wins if he gets a sum greater than 20 in four throws of die
• in three throws he gets 6,5,4

To find: what will he get in the fourth throw to win the game

Solution:

• The sum of the first three throws is (6 + 5 + 4) = 15

• Let he will get k in the 4th throw. Then
• 15 + k > 20
• or, k > 20 - 15
• or, k > 5

• The only possible value of k is 6.

Answer: he will get 6 in the 4th throw to win the game.