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A number and its predecessor are added together to give 1999.
What is the number?

Class 6Successor and PredecessorWhole Numbers

A999
B1000
C1001
D998

Step-by-Step Solution

Let the number be

n

. Then

n + (n - 1) = 1999

, so

2 n - 1 = 1999, 2 n = 2000, n = 1000

.

Answer: B) 1000

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