How many positive integers less than 500 can be formed using the numbers 1 , 2 , 3 and 5 for the digits?


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Question Number 162942 by HongKing last updated on 02/Jan/22

$How many positive integers less than$ $500 can be formed using the numbers$ $1, 2, 3 and 5 for the digits ?$
	Answered by som(math1967) last updated on 02/Jan/22

	$3 d i g i t s t a r t i n g w i t h 1, 2, 3 = 4^{2} \times 3$ $2 d i g i t = 4^{2} u n i t d i g i t = 4$ $t o t a l = 48 + 16 + 4 = 68$
	Answered by peter frank last updated on 02/Jan/22

	$with repetition or without repetition ?$
	Commented by som(math1967) last updated on 02/Jan/22

	$w i t h r e p e t i t i o n$
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