If [n] denotes the greatest integer < n and (n) denotes

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If [n] denotes the greatest integer < n and (n) denotes the smallest integer > n, where n is any real number, then
1 1 × 1 1 − 1 1 ÷ 1 1 + (1.5) is
5 5 5 5

1. 1.5
2. 2
3. 2.5
4. 3.5

Correct Option: B

[n] < n (integer); (n) > n (integer)
∴ Expression

	1	1		×		1	1		−		1	1		÷		1	1		+ (1.5) = 2 × 1 – 2 ÷ 1 + 2 = 2
		5					5					5					5