1.

If (p)rarr the least possible integer greater than or equal to p. g t (p)rarr the greatest possible integer less than or equal to p. Delta(p, q) =" Min "(l t(p), g t(q)) Which of the following statements is always true about (a-b) where a=(p+q)/(2) and b=(h(p)+g t(q))/(2)

Answer»

`-(1)/(4) le(a-B)le(1)/(4)`, always
`-(4)/(2)le(a-b)le(4)/(2)`
`-1le(a-b)LE1`
`-1le(a-b)le1`, EXCEPT zero

Answer :B


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