Question 3
John wrote a 2-digit number and asked Peter to guess it.
Peter: “Is the number divisible by 12?”
John: “It is divisible by 12.”
Peter: “Is the number divisible by 27?”
John: “No, it is not divisible by 27.”
Peter: “Is it a square number?”
John: “Yes, it is a square number.”
What number did John write?
Source glossary (English–Vietnamese): 2-digit number: số có 2 chữ số; Divisible: chia hết; Square number: số chính phương.
Peter: “Is the number divisible by 12?”
John: “It is divisible by 12.”
Peter: “Is the number divisible by 27?”
John: “No, it is not divisible by 27.”
Peter: “Is it a square number?”
John: “Yes, it is a square number.”
What number did John write?
Source glossary (English–Vietnamese): 2-digit number: số có 2 chữ số; Divisible: chia hết; Square number: số chính phương.