৩১৫৩২
প্রত্যেকটি অংক কেবল একবার নিয়ে ৮,৯,৭,৬,৩,২ অংকগুলো দ্বারা তিন অংক বিশিষ্ট কতগুলো ভিন্ন ভিন্ন সংখ্যা গঠন করা য়ায়?
উত্তর
120
৩১৫৩৩
একটি আয়তক্ষেত্র ও একটি বর্গক্ষেত্রের পরিসীমা পরস্পর সমান। যদি আয়তক্ষেত্রের প্রস্থ তার দৈর্ঘ্যের অর্ধেক হয় তবে বর্গক্ষেত্র ও আয়তক্ষেত্রের ক্ষেত্রফলের অনুপাত কত?
উত্তর
৯ : ৮
৩১৫৩৪
A year ago the price of a toothbrush and the price of a comb were both Tk.50. The price of the toothbrush was increased by 20% while the price of the comb was decreased by 10%.What is the difference in Taka between the current price of the toothbrush and the comb?
উত্তর
15
৩১৫৩৫
The average daily wages of female worker in a factory is Tk. 30 and that of male workers is Tk.42.If the average wages of all the woekers is Tk.37, what is the ratio of male to female workers?
উত্তর
7:5
৩১৫৩৬
A father said to his son , " I was as old as you are at present at the time of your birth". If the father,s age is 36 years now, the son's five years back was____
উত্তর
10 years
৩১৫৩৭
An accurate clock show 8 O'clock in the morning. Since then , how many degrees will the hour-hand rotate when clock shows 2 O, clock in the afternoon?
উত্তর
90 degree
৩১৫৩৮
To reproduce an old photograph, a studio charges Tk. z to make anegative, Tk. 0.6z for each of the first 10 prints, and Tk. 0.2z. for each print in excess of 10 prints. If Tk. 45 is the total charge to make one nagative and 20 prints from an old photograph then what is the value of z?
উত্তর
Tk.5
৩১৫৩৯
The diameters of two circles are the side of a square and the diagonal of the square. The ratio of the areas of the smaller circle and the larger circle is:
উত্তর
1 : 2
৩১৫৪০
The cost of manufacturing x water pumps is Tk.9000+400x. The amount received by selling these x water pumps is Tk. 500x. What is the least number of water pumps that must be manufactured and sold so that that the amount recieved is at least equal to the manufacturing cost?
উত্তর
90