This question asks about the (mostly?) Ashkenazic practice of giving charity in multiples of 18. Another custom I have observed is to give charity in round numbers + 1 e.g. $51, $101, $201 etc. This ...
Reuven is planning a trip to Israel. Shimon, knowing this, gives Reuven money for tzedakah with the expectation that Reuven will distribute it when he gets to Israel. Reuven and Shimon both ...