![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The number is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9bf75971b2225468409a3ac170a31236.png\")
.
If a is negative, then ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4aec7fc9dbce01aee571230970585caf.png\")
.
Apply above formula.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=06f632114350a1825ba80f203780adde.png\")
Product of two same signs is positive.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=eefc3a155f4dfc35e97776cbc2472153.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5e095665a965a1a4779477fcd271e7c1.png\")
belongs to the whole number set.![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
The number is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=87fc4fd7a4bc34da889d404e10aad4f3.png\")
. This number does not belongs to the whole number set, since whole number set start from 0, 1, 2, . . . to positive infinity.
The number is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b571c622bab4f7c430e0bef8087b39bf.png\")
. This number does not belongs to the whole number set, since whole number set start from 0, 1, 2, . . . . to positive infinity.
The number is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e592837ba85cf6afe3ed05b7d54203ac.png\")
. This number does not belongs to the whole number set, since whole number set start from 0, 1, 2, . . . . to positive infinity.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The option A is correct answer.