If we toss three coins 240 times, how many times can we expect the coins to have three tails showing?
Three of them
How many strings of three digits are there? 000 to 999, or a total of 1000. How many strings of three digits contain the same three digits? That's 000, 111, 222 ... 999! ten in total. The difference is your answer: 1000-10 = 990.
6
Four outcomes, three combinations.
3 non-collinear points define one plane.
One.exactly one
exactly one and only one.
just one
The answer depends on the number of point. One point - as the question states - cannot be non-collinear. Any two points are always collinear. But three or more points will define a plane. If four points are non-coplanar, they will define four planes (as in a tetrahedron).
1, exactly 1 plane will
10!
Only one plane can pass through 3 non-collinear points.
one
Three.
Just one plane.
If you are talking about straight lines, the answer is NONE, because that is what noncollinear means. If curves are allowed, then the answer is infinitely many.