What percent of the number from 1 to 80 have squares that in the digit 9?...please solve it..
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from 1 to 10 there are 2 such numbers...3 and 7
from 1 to 80 there will be 16 such numbers
16/80*100=20%
from 1 to 80 there will be 16 such numbers
16/80*100=20%
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