Which number comes next in the sequence? 1,2,0,3,-1,4,..

A    2

B    -2

C    -3

D    none of these

Solution

Correct Answer: Option B

 

The working variables in the sequence is the two digits at a time. Thus,

1 and 2 is the first variable.

1-1=0; 0-1=-1; Similarly, -1-1=-2

2+1=3; 3+1=4; Similarly, 4+1=5

The next number after 4 would be -2.

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