Question 20
Ren selected 20 different whole numbers greater than 0 such that the product of any 9 numbers is always even. The sum of the 20 numbers is an odd number. Find the least possible sum of these numbers.
Answer format: enter the whole-number answer without units. Leading zeros are optional (the original paper uses four-digit answer boxes).
Answer format: enter the whole-number answer without units. Leading zeros are optional (the original paper uses four-digit answer boxes).