Question 21
A teacher gives each of three students Asha, Betty and Cheng a card with a ‘secret’ number on it. Each looks at her own number but does not know the other two numbers. Then the teacher gives them this information.
All three numbers are different whole numbers and their sum is 13. The product of the numbers is odd. Betty and Cheng now know what the numbers are on the other two cards, but Asha does not have enough information. What number is on Asha’s card?
All three numbers are different whole numbers and their sum is 13. The product of the numbers is odd. Betty and Cheng now know what the numbers are on the other two cards, but Asha does not have enough information. What number is on Asha’s card?