A twitching eye can be one sign of stress, especially when it is related to vision problems such as eye strain (see below). Reducing the cause of the stress can help make the twitching stop. Tiredness: A lack of sleep, whether because of stress or some other reason, can trigger a twitching eyelid.
C(n,k) is the number of combinations you can make of k objects out of a given set of n objects. We see that C(n,0) and C(n,n) should be equal to 1, but they require that 0! be used. So 0! = 1 neatly fits what we expect C(n,0) and C(n,n) to be.(n,k) is the number of combinations you can make of k objects out of a given set of n objects. We see that C(n,0) and C(n,n) should be equal to 1, but they require that 0! be used. So 0! = 1 neatly fits what we expect C(n,0) and C(n,n) to be.
How many zeros are there in one billion? A: The numeral one billion has nine zeros. This number is equal to one thousand million. In scientific notation, one billion is written as 1x10 to the ninth p... Full Answer >