★★

In the diagram, A and B are two overlapping rectangles. The sum of the areas of A and B is 123 cm². The fraction of A that overlaps is ⁴⁄9, and the fraction of B that overlaps is ⁶⁄7. Determine the area of the overlap.

mathematics, unemasculated, befitting school years 6, 7 & 8

★★

In the diagram, A and B are two overlapping rectangles. The sum of the areas of A and B is 123 cm². The fraction of A that overlaps is ⁴⁄9, and the fraction of B that overlaps is ⁶⁄7. Determine the area of the overlap.

★

Numbers are arranged according to a particular rule, as shown.

⒜ Determine the number at the left end of Row 7.

⒝ Determine in which row the number 100 is located.

⒞* Determine the sum of the numbers in Row 10.

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