Multiplication - examples - page 4
The lorry was loaded with 27 boxes of 24 kg. How many boxes with weight 36 kg can be loaded, if total load must be same?
A class consists of 5 males and 18 females. How many committees of 4 are possible if the committee must consist of 3 males and 1 females?
- Phone numbers
How many 9-digit telephone numbers can be compiled from the digits 0,1,2,..,8,9 that no digit is repeated?
Calculate the integer number which, divided by 45 gives 20 and the rest 2.
- Friends in cinema
5 friends went to the cinema. How many possible ways can sit in a row, if one of them wants to sit in the middle and the remaining's place does not matter?
Draw a regular hexagon inscribed in a circle with radius r=6 cm. What is its perimeter?
On the meadow grazing horses, cows and sheep, together less than 200. If cows were 45 times more, horses 60 times more and sheep 35 times more than there are now, their numbers would equall. How many horses, cows and sheep are on the meadow together?
How many ways can divide 22 identical candies to 4 children?
Calculate the area and perimeter of a parallelogram whose two sides are long a=10 cm b=22 cm and height ha = 4 cm long.
- Daily average
Calculate the average temperature during the day, when 14 hours was 20 °C and 10 hours was 15 °C.
The boys changed stamps, beads and balls. For 50 balls is 35 stamps, 20 balls is 28 stamps. How many beads is for 1 ball?
- Air mass
What is the weight of the air in a classroom with dimensions 5 m × 2 m × 3.1 m ? The air density is 1.293 kg/m3.
- Geometric progression
Fill 4 numbers between 5 and 295245 to form geometric progression.
Once upon a time, tsar owned a money printer and printed and printed. The result of printing money prices went up,in the first year 5.9 %, in the second 2.4%, in the third 5.9% and in the fourth 5.7%. Then tsar was failed in election. Calculate the av
How many 3 letter "words" are possible using 18 letters of the alphabet? a) n - without repetition b) m - with repetition
- 3y inflation
Price of the bread rise in the first year by 7%, the second year fell by 4% and in the third year increased by 8%. Calculate the average annual increase in price of the bread.
Dad has two years more than mom. Mom has 5 times more than Katy. Katy has 2 times less than Jan. Jan is 10 years old. How old is everyone in the family? How old are all together?
- Three digits number
How many are three-digit integers such that in they no digit repeats?
- Forestry workers
In the forest is employed 63 laborers planting trees in nurseries. For 11 hour work day would end job in 43 days. After 14 days, 22 laborers go forth. How many days is needed to complete a planting trees in nurseries by others, if they will work 15 hours
Calculate the area of masonry to build wall with dimensions of 19 m × 4 m with 5 windows of size 50 cm × 50 cm.