exam Maths Puzzle Numerical Ability

Please help to Draw and Label :

Line L and M in plane ABC intersect at point C

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exam Other Question

Use elementary row operations to write the matrix in echelon form:

[2 4 2 6]
-2 1 3 4
3 2 1 5


please someone help me figure this out and if an
What is the probability of winning a lottery game where the winning numbers is made up of seven didits from 0 to 9 chosen at ramdom