Solve this


Let $[t]$ denote the greatest integer $\leq t$. Then the equation in $x,[x]^{2}+2[x+2]-7=0$ has :

  1.  no integral solution


  2.  exactly four integral solutions


  3.  exactly two solutions


  4.  infinitely many solutions

Correct Option: , 4





$\Rightarrow x \in[1,2) \cup[-3,-2)$


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