how many different possible 4 digits pins can be found on the 10-digit keypad?
Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):
Showing 0 comments:
Be the first to comment!
To solve this example are needed these knowledge from mathematics:
Next similar examples:
- Dinning room
How many different combinations can we choose if there are 3 soups, 5 kinds of main dish and 2 desserts in the dining room?
- Coin and die
Flip a coin and then roll a six-sided die. How many possible combinations are there?
Seven friends agree to send everyone a holiday card. How many postcards were sent?
- Football league
In the 5th football league is 10 teams. How many ways can be filled first, second and third place?
Uphill leads 2 paths and 1 lift. a) How many options back and forth are there? b) How many options to get there and back by not same path are there? c) How many options back and forth are there that we go at least once a lift?
- 7 heroes
9 heroes galloping on 9 horses behind. How many ways can sort them behind?
On the disco goes 12 boys and 15 girls. In how many ways can we select four dancing couples?
Mom every day buys 6 rolls. On Friday buys 2 times as much. How many rolls buys on Friday?
The bicycle pedal gear has 36 teeth, the rear gear wheel has 10 teeth. How many times turns rear wheel, when pedal wheel turns 120x?
Find all five-digit numbers that can be created from numbers 12345 so that the numbers are not repeated and then numbers with repeated digits. Give the calculation.
- Dd 2-digit numbers
Find all odd 2-digit natural numbers compiled from digits 1; 3; 4; 6; 8 if the digits are not repeated.
Average of 7 numbers is 65. What is its sum?
- Watching TV
One evening 2/3 students watch TV. Of those students, 3/8 watched a reality show. Of the students that watched the show, 1/4 of them recorded it. What fraction of the students watched and recorded reality tv.
The arithmetic mean of the two numbers is 71.7. One number is 5. Calculate the second number.
Result of the product of the numbers 1, 2, 3, 1, 2, 0 is:
- Obtuse angle
Which obtuse angle is creating clocks at 17:00?
Iron ore contains 57% iron. How much ore is needed to produce 20 tons of iron?