There are 20 counters in a bag. 3 of the counters are red. 2 of the counters is blue. 5 of the counters are yellow. The rest of the counters are green. Ajay takes at random a counter from the bag. (c) Show that the probability that this counter is yellow or green is
Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?