Book Maths Puzzle Numerical Ability

Can you write 31 using only digit 3 five times?

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Book Other Question

X 11 1098 76 5 43 21 4L are drawn from a cask full of wine ans is then filled with water. this operation is performed three more times. the ratio of the qty of wine now left in cask to that of water is 16:65.how much wine did the cask hold originally ?
a. 24L b.12L c.6L d.8L