Hope it helps 20,30,900,1000
perpendicular to the given plane and passes through (6, 2, 7).
Answer:

Step-by-step explanation:
given,
straight stick of length = 2, 3, 5, 7, 11, and 13.
For a triangle to form third side of the sum of the two side of the triangle should be greater than third.
so the possibility of triangle formed
5,11,13
7,11,13
3,11,13
7,5,11
5,3,7
ways of drawing 3 wooden sticks
⁶C₃ =
= 20
so the probability = 
= 
The last one I am pretty sure is the correct answer.