exam Maths Puzzle Numerical Ability

In the coordinates (5,-4) which number represents the y value? The answer to this is -4. The next question is "What are the coordinates of the origin?"

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exam Other Question

subtract the first polynomial from the first: 6k + 2c
4k - 3c From a group of 6 juniors and 8 seniors on the student council, 2 juniors and 4 seniors will be chosen to make up a 6-person committee. How many different 6-person committees are possible?