Cash and Cash Equivalents (Tables)

9 Months Ended

Feb. 29, 2020

Cash and Cash Equivalents [Abstract]

Schedule of cash and cash equivalents

	February 29, 2020		May 31, 2019
Cash in banks	$	3,171,564	$	3,072,218
Money market funds		301,718		622,771
	$	3,473,282	$	3,694,989