A quadrilateral having both pairs of opposite sides parallel to each other.
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ways of getting 14 1,1,6,6 6 arrangements (1,6,1,6; 1,6,6,1; 1,1,6,6; 6,6,1,1; 6,1,6,1; 6,1,1,6) 1,2,5,6 24 arr. 1,3,4,6 24 arr. 1,3,5,5 12 arr. 1,4,4,5 12 arr. 2,2,4,6 12 arr. 2,2,5,5 6 arr. 2,3,3,6 12 arr. 2,3,4,5 24 arr. 2,4,4,4 4 arr. 3,3,3,5 4 arr. 3,3,4,4 6 arr. Total: 146 146*(1/6)4 = 0.1127... so slightly over 1/9
formula for arr- total room revenue ARR= ------------------------------ total occupied room
No. All rhombi (rhombuses) are parallelograms but all parallelograms are not rhombi.
No but all parallelograms are trapezoids
No, but all parallelograms are trapezoids.