What percentage of numbers from 11 to 90 has 0 or 5 in the unit’s digit?
Solution
Correct Answer: Option C
15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90 => 16 Numbers
And amount of numbers from11 to 90 = (90 - 11) +1 = 79 + 1 = 80
Percentage of numbers = 16*100/80 = 20%
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