A number of students prepared for an examination. Arts, Religion and sculpture. Out of this number, 15 took arts, 20 took religion and 23 took sculpture, 9 took both religion and sculpture, 6 took both arts and sculpture and all those who took arts also took religion. One student fell ill and failed to write any of the papers. How many students took exactly one of the examination papers?​

Igure 1 and figure 2 are two congruent parallelograms drawn on a coordinate grid as shown below: 4 quadrant coordinate grid showing two parallelograms. figure 1 has vertices at negative 5, 2 and negative 3, 4 and negative 4, 7 and negative 6, 5. figure 2 has vertices at 5, negative 2 and 7, negative 4 and 6, negative 7 and 4, negative 5. which two transformations can map figure 1 onto figure 2? reflection across the y-axis, followed by reflection across x-axis reflection across the x-axis, followed by reflection across y-axis reflection across the x-axis, followed by translation 10 units right reflection across the y-axis, followed by translation 5 units down