It is known that in the sequence A, X, B, C, D, Y, 11 the sum of any 3 consecutive terms is 19. The value of A+B+C+D is
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Answer:
30
Step-by-step explanation:
A+X+B+C+D+Y=11+5+3+11+5+3+11
from this we get
A+B+C+D=11+3+11+5=30
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