Variations - math problems
Number of problems found: 121
- Variations 4/2
Determine the number of items when the count of variations of fourth class without repeating is 600 times larger than the count of variations of second class without repetition.
Determine the number of items when the count of variations of fourth class without repeating is 42 times larger than the count of variations of third class without repetition.
- 2nd class variations
From how many elements you can create 2450 variations of the second class?
- Variations 3rd class
From how many elements we can create 13,800 variations 3rd class without repeating?
- VCP equation
Solve the following equation with variations, combinations and permutations: 4 V(2,x)-3 C(2,x+ 1) - x P(2) = 0
- Variation equation
Solve combinatorics equation: V(2, x+8)=72 . .. variations second class from x+8 items
Seven friends agree to send everyone a holiday card. How many postcards were sent?
In how many ways can be divided gold, silver, and bronze medal among 21 contestants?
- Pins 2
how many different possible 4 digits pins can be found on the 10-digit keypad?
- Task of the year
Determine the number of integers from 1 to 106 with ending four digits 2015.
How many diagonals has convex 11-gon?
C(6,3) + 3 P(6,3)
- Possible combinations - word
How many ways can the letters F, A, I, R be arranged?
- How many 13
How many ways can X³ y⁴ z³ be written without an exponent?
The city has 7 fountains. Works only 6. How many options are there that can squirt ?
- 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?
- Cars plates
How many different licence plates can country have, given that they use 3 letters followed by 3 digits?
How many ways can be rewarded 9 participants with the first, second, and third prizes in a sports competition?
- Bits, bytes
Calculate how many different numbers can be encoded in 16-bit binary word?
See also our variations calculator.