Find the values of A, B, C, D and E
Algebra
Level
2
A, B, C, D and E are single one digit numbers. When you multiply them by 4, it is the reverse order - E, D, C, B, A.
What are the values of A, B, C, D and E?
ABCDE
x 4
EDCBA
A = 0 B = 2 C = 4 D = 6 E = 8
A = 2 B = 1 C = 9 D = 7 E = 8
A = 1 B = 3 C = 5 D = 7 E = 9
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As multiple choice, it's a simple matter of testing the choices. 21978 x 4 = 87912. Would be a bit more challenging if the choices weren't provided.