what percentage of numbers from 1 to 70 have 1 or 9 in the unit's digit? 15 O 14% 20% 21%
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Answer:
20%
Step-by-step explanation:
total number whose units place is either 1 or 9
are
1,9,11,19,21,29,31,39,41,49,51,59,61,69
equal=14
therefore required %=14/70×100
=1/5×100
=20%
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