9000139709
Level:
A
Find the number of possible ways how to organize a group of
Combinatorics
9000148901
Level:
A
The current Czech vehicle registration plate number has the form NLN-NNNN, where N stands
for a digit from
9000148902
Level:
A
There are four paths from a city to the top of nearby mountain. Find the number of
possible treks from the city to the mountain and back, if it is required to use one
path up and another one down.
9000148903
Level:
A
A combination lock will open if a right choice of three numbers (from
9000148904
Level:
A
Pamela needs new ski for a ski course. There are skis from six different vendors in a
shop. The shop has four different ski pairs from each vendor, but two vendors have all
products behind Pam's financial limit. How many pairs are at disposal for Pam?
9000148905
Level:
A
The king has eight daughters. A dragon asks two daughters, otherwise he will
destroy the whole country. In how many ways can we choose a pair of king's
daughters for the dragon?
9000148907
Level:
A
A bowl contains
sweet-drop
gummy-bear
Both possibilities give the same result.
9000148908
Level:
A
There are seven different yellow apples, eight different green apples and ten different
red apples. How many ways are there to choose three apples, if we wish to have three
apples of different colors?
9000148909
Level:
A
There are
9000148910
Level:
A
The player throws a dice in a desktop game. If he gets the number