Question by huynh anh phuong - Discuss with MathYouLike

huynh anh phuong

31/05/2018 at 10:19

If a and b are prime number , a is smaller than 110 and bigger than 99 and b is the greatest 1-digit number, whats is the total ?

double counting

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Nguyễn Mạnh Hùng 14/06/2018 at 08:22

According to the title, we have:

99<a<110 and a is a prime number

So a=103

b is the greatest 1-digit number so b = 9

a+b=103+9=112

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