Asymm2dd up these 3 equations. What do you notice?


Find the values of x, y and z.

Now add up all 5 equations given below. What do you notice?

b + c + d + e = 4
a + c + d + e = 5
a + b + d + e = 1
a + b + c + e = 2
a + b + c + d = 0

Use the pattern you see in these equations to find the values of a, b, c , d and e.

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This problem is adapted from the NRICH task with the same name with permission of the University of Cambridge. All rights reserved.

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