Question
If the sum of successor and predecessor of a number is 14, then the number should be _____.
Answer: Option C
:
C
Let the number be x.
Therefore, the successor of number is x + 1 and the predecessor is x - 1.
Given that the sum of successor and predecessor is 14.
∴x+1+x−1=14⇒2x=14⇒x=142⇒x=7
So, the number should be 7.
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:
C
Let the number be x.
Therefore, the successor of number is x + 1 and the predecessor is x - 1.
Given that the sum of successor and predecessor is 14.
∴x+1+x−1=14⇒2x=14⇒x=142⇒x=7
So, the number should be 7.
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