Question 1107156
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Only two digits, 1 or 2, may stay in the most-left position for the number to be less than 300.   (2 opportunities)


Any of 5 digits may stay in the 2-nd position  (5 opportunities).


Any of 5 digits may stay in the 3-rd ("ones") position  (5 opportunities).


In all,  2*5*5 = 50 numbers are possible.
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