a,b,c,d চারটি ক্রমিক স্বাভাবিক সংখ্যা হলে নিচের কোনটি পূর্ণবর্গ সংখ্যা ?
a=3+2 হলে a3+1a3
একটি গাড়ির চাকার ব্যাস ১.৬৭ মিটার। ২১ কিলোমিটার পথ যেতে চাকাটি কতবার ঘুরবে?
একটি পণ্য বিক্রয় করে পাইকারী বিক্রেতা ২০% এবং খুচরা বিক্রেতা ২০% লাভ করে। যদি দ্রব্যটির খুচরা বিক্রয়মূল্য ৫৭৬ টাকা হয়, তবে পাইকারী বিক্রেতার ক্রয়মূল্য কত?
১৩ টি সংখ্যার যোগফল ৪৬২ , প্রথম ৪টির গড় ৫২ ও শেষ ৫ টির গড় ৩৮ হলে ৫ম সংখ্যাটি কত?
28x+1426 = three -fourths of 2984, find x.
4x+1=32 হলে x=?
The sum of the digits of two -digit number is 10, while when the digits are reversed , the number decrease by 54. Find the changed number .
A shopkeeper earns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of the cost price and the printed price of the book is -
The selling price of an article after giving two successive discounts of 10% and 5% on the marked price is TK. 171 . What is the marked price ?
If A and B together can complete a work in 18 days, A and C together in 12 day and B and C together in 9 days, then B alone can do the work in -
A tank can be filled with water by two pipes A and B together in 36 minutes, the tank is filled in 40 minutes. The pipe B can alone fill the tank in -
In a 729 liters mixture of milk and water , the ratio of milk to water is 7:2 To get a new mixture containing milk and water in the ratio 7:3 the amount of water to be added is -
In what ratio must a grocer mix two varieties of pulses costing Tk. 15 and TK. 20 per kg respectively so as to get a mixture worth Tk. 16.50 kg?
A and B invest in a business in the ratio 3:2 . If 5% of the total profit goes to charity and A's share is Tk. 855 the total profit is -
The sum of ages of 5 children born at the intervals of three years each is 50 years what is the age of the youngest child?
Six years ago, the ratio of ages of Kunal and Sagars was 6 : 5. Four years hence, the ratio of their ages will be 11 : 10. what is Sagar's age at present ?
The price of 10 chairs is equal to that of 4 tables . The price of 15 chairs and 2 tables together is Tk. 4000. The total price of 12 chairs and 3 tables is-
If m and n are whole numbers such that mn=121, the value of (m-1)n+1 is
A pump can fill a tank with water in 2 hours . Because of a leak , it took 213 hours to fill the tank.The leak can drain all the water of the tank in -