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Q.

Which of the following is not an integer?


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a

0

b

-1

c

-1.5

d

1  

answer is C.

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Detailed Solution

Given numbers are, 0, -1, -1.5 and 1.
An integer is a whole number which can be positive, negative or zero.
The set of integers is denoted by Z and defined by Z={0,±1,±2,±3⋯} So, options 1,2,4 all are integers.
And option 3 which is 1.5 is not an integer.
Therefore, option (3) is the correct answer.
 
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