1.

If R be the set of points inside a rectangle of sides a and b (a, b gt 1) with two sides along the positive direction of X-axis and Y-axis. Then,

Answer»

`R= {(x, y) : 0 le x le a, 0 le y le B}`
`R= {(x, y) : 0 le x LT a, 0 le y lt b}`
`R= {(x, y) : 0 le x le a, 0 lt y lt b}`
`R= {(x, y) : 0 lt x lt a, 0 lt y lt b}`

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