Make it True

81 x 9 = 801. What must you do to make the this equation true?




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Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

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In the four images below, can you find the odd one out?

Odd One Out Riddle

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When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

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I am white when I am dirty, and black when I am clean. What am I?

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Gambling

In Canada, a mathematical puzzle must be solved in order to win the lottery to classify it as a “game of skill” not gambling.