A swimming pool has four faucets. The first can fill the entire pool with water in two days, the second in three days, the third in four days, and the last one can fill the pool in 6 hours. How long will it take to fill the pool using all 4 faucets together?
A swimming pool has four faucets. The first can fill the entire pool with water in two days, the second - in three days, the third - in four days, and the last one can fill the pool in 6 hours. How long will it take to fill the pool using all 4 faucets together?
Fill in the blanks with four words, such that the first and the fourth are the same, while the second and the third are homonyms.
A jailer _ _, and a jeweler _ _.
In the middle of a round pool lies a beautiful water lily. The water lily doubles in size every day. After exactly 20 days, the lily will cover the complete pool. After how many days will the water lily cover half of the pool?
There is a 3-digit number. The second digit is four times as big as the third digit, while the first digit is three less than the second digit. What is the number?
