The easiest examples

1. Three cats If three cats eat three mice in three minutes, after which time 260 cats eat 260 mice?
2. Chocolate Leslie bought 8 same chocolates for 16 Eur. How many euros will he pay for 25 chocolates?
3. Divisibility Is the number 761082 exactly divisible by 9? (the result is the integer and/or remainder is zero)
4. Inflation What is better for people (employees)? ?
5. One half One half of ? is: ?
6. Brick weight The brick weighs 2 kg and a half bricks. How much does one brick weigh?
7. Family The parents had 7 daughters. Each of them had one brother. How many members family had?
8. Cyclist A cyclist passes 88 km in 4 hours. How many kilometers he pass in 8 hours?
9. Orchard 3 trees in 3 lines grows in the orchard. How many trees are in the orchard?
10. Balls I have 19 balls and my friend has 27. About how many has my friend more balls?
11. Ton's teeth Calculate at what age homeless Anton will toothless. At age 29 has 26 teeth and each year next one tooth broke.
12. Holidays Calculate how many hours take holidays, if take 5 weeks.
13. Proof PT Can you easy prove Pythagoras theorem using Euclidean theorems? If so, do it.
14. 7 heroes 9 heroes galloping on 9 horses behind. How many ways can sort them behind?
15. Vans In how many ways can 9 shuttle vans line up at the airport?
16. Reverse Pythagorean theorem Given are lengths of the sides of the triangles. Decide which one is rectangular: Δ ABC: 77 dm, 85 dm, 36 dm ? Δ DEF: 55 dm, 82 dm, 61 dm ? Δ GHI: 24 mm, 25 mm, 7 mm ? Δ JKL: 32 dm, 51 dm, 82 dm ? Δ MNO: 51 dm, 45 dm, 24 dm ?
17. Is right? Is triangle with sides 51, 56 and 77 right triangle?
18. Piggy A man bought a pig for € 60 then sold it for € 75. Then again bought for € 90 and sold it for € 100. How many € earned?
19. Root The root of the equation ? is: ?
20. Compare Compare fractions ?. Which fraction of the lower?

Do you have an interesting mathematical example that you can't solve it? Enter it, and we can try to solve it.

To this e-mail address, we will reply solution; solved examples are also published here. Please enter e-mail correctly and check whether you don't have a full mailbox.