JEE Main 202227 Jun, Morning shiftMathematicsMediumLimit, Continuity and Differentiability420× since 2002Let a be an integer such that limx→718−[1−x][x−3a]\mathop {\lim }\limits_{x \to 7} {{18 - [1 - x]} \over {[x - 3a]}}x→7lim[x−3a]18−[1−x] exists, where [t] is greatest integer ≤\le≤ t. Then a is equal to :AOption A. −-−6BOption B. −-−2COption C. 2DOption D. 6CheckSkip · show solution