There are only pink buttons, blue buttons and green buttons in a jar. The ratio of the number of pink buttons to the number of blue buttons is 2:7 The ratio of the number of blue buttons to the number of green buttons is 3:4 There are less than 170 buttons in the jar. Work out the greatest number of green buttons in the jar.​

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.