Answer:
9
Step-by-step explanation:
If Rahul took 7 marbles at a time and was left with 2 marbles, we can find the original number of marbles he had by working backwards.
Let's consider some possibilities:
1. If Rahul had 9 marbles originally, he could have taken 7 marbles, leaving 2 marbles. This matches the given information, so 9 is a possible answer.
So, the original number of marbles Rahul had before could be 9.
NOTE: Not enough information was given so this answer is only a possibility.