Abhishek was playing an interesting timed game in which he was supposed to pick up the marbles scattered on the floor in exactly 5 minutes from the time the buzzer went off. During each of his 25 attempts, he tried to pick up the maximum number of marbles lying on the floor. However, after a certain number of attempts, he forgot the count of marbles he had picked up in each of the previous rounds. The only figure he could remember now was that he had picked up a total of 337 marbles in the first 5 rounds. Further, he never picked up the same number of marbles in any of the rounds and always picked a number of marbles less than the number of marbles picked up by him in the previous round.
Q. If in two of the rounds he had picked up 100 or more marbles, the least number of marbles he could have picked up in any of the rounds can be at most:
Correct answer is '24'. Can you explain this answer?