Which one of the following numbers can be removed from the set S = (0, 2, 4, 5, 9) without changing the average?
১ থেকে ৪৯ পর্যন্ত সংখ্যার গড় কত?
৪টি ঘণ্টা ৮, ১২, ১৬ ও ২৪ মিনিট পর পর বাজে কতক্ষণ পর তারা একসঙ্গে বাজবে?
A trader paid Tk. 300 for a shipment of x identical pens. The trader gave two pens free of cost and sold each for Tk. 5 more than the average cost of the x pens. If the total revenue from the sale of the pens was Tk. 120 more than the cost of the shipment, how many pens were in the shipment?