If the side = 10 cm, correct to the nearest whole number, then The side ranges from 9.5 cm to 10.5 cm. (9.5 \(\leq\) s < 10.5) Perimeter of a rhombus = 4 x side \(\therefore\) 4 x 9.5 \(\leq\) perimeter < 4 x 10.5 = 38 cm \(\leq\) P < 42 cm
A group of 11 people can speak either English or French or Both. Seven can speak English and six can speak French. What is the probability that a person chosen at random can speak both English and French?