Toán tiếng anh nhá no sờ pam

$\text{The largest number of days in a month is 31, and the smallest two-digit primes are 11, 13, and 17 (subsequent primes are disqualified because of their sum to any two-digit primes greater than 31).}$
$\text{So the three numbers in the shirt 11, 13, 17, and the sum of their three pairs are 24, 28 and 30.}$
$\text{Since all the dates covered in the story are in the same month, Caitlin's birthday is largest, i.e. 30, today is 28, and Bethany's birthday is 24.}$
$\text{So Asley's shirt number is 13, Bethany's is 17, and Caitlin's shirt number is 11.}$