1.

If `[x]^2- 5[x]+6= 0`, [x] denote the greatest integer function, thenA. `x in[3,4]`B. `x in (2,3]`C. `x in [2,3]`D. `x in [2,4]`

Answer» Correct Answer - C
We have `[x]^(2)-5[x]+6=0`
`rArr [x]^(2)-3[x]-2[x]+6=0`
`rArr [x]([x]-3)-2([x]-3)=0`
`rArr([x)-3)([x]-2)=0`
`rArr [x]=2,3]`
`:. "x" in[2,3]`


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