To figure out which number is larger, you first need to solve them.
Whenever you see the world "of", think of multiplication. When you see "of", replace that with a "×".
One-thirteenth of 26.
One-thirteenth = 1/13
(1/13) × 26
2
One-sixth of 72.
One-sixth = 1/6
(1/6) × 72
12
From the answers we got, 2 and 12, the larger number was 12. This is the product of one-sixth of 72.
Therefore, the answer is one-sixth of 72 is larger.