৪৩ থেকে ৬০ এর মধ্যে মৌলিক সংখ্যা কয়টি ?
A bag contains five red balls, twelve blue balls and eight green balls. If one ball is drawn from the bag what is the probability that the ball will not be green?
By selling a watch for tk. 1140 a man loses 5% In order to gain 5% , the watch must be sold for :