1.Continue the sequence: 7, 14, 28, 56, …
2.Continue the sequence: 81, 27, 9, 3, …
3.Continue the sequence: 2, 3, 5, 8, 12, 17, …
4.Continue the sequence: 1, 2, 6, 24, 120, …
5.An item cost 800, went up by 25%, then came down by 20%. What does it cost now?
6.What percentage of 250 is 60?
7.Two fifths of a number equal 34. What is the number?
8.A 30% discount, then another 10% off the new price. What is the total discount from the original price?
9.Three painters paint a fence in 6 hours. How long will two of them take on the same fence?
10.A train covers 240 km in 3 hours. How far will it go in 5 hours at the same speed?
11.The average of five numbers is 12. One number is removed and the average of the rest becomes 11. Which number was removed?
12.A hall has 18 rows of 24 seats and is about 70% full. Roughly how many people are there?
Please answer every question