If the result obtained by multiplying a number, X, by a number 1 less itself is 4 less than multiplying x by itsell then x=?
When you reverse the digits of the number 13, the number increases by 18. How many other two-digit numbers increase by 18 when their digits are reversed?
If a principal amount doubles in 10 years, what will be the annual interest rate?
A reduction of 15% in the price of a shirt resulted in the reduction of the price of the shirt by Tk 21. What was the previous price of the shirt?
মামুনের ওড়ান রনির চেয়ে বেশি এবং মিশুর ওজন মামুনের চেয়ে বেশি তাহলে কার ওজন সবচেয়ে কম?
It takes 24 hours for 10 men to make 15 cakes. How many cakes can be made if 8 men work for 36 hours?
The ratio of present age of father, mother and son is 7:5:3. The sum of their ages is 75. What is the present age of the son in years?
How many prime numbers are there between 1 to 11?
What is the smallest positive integer that is evenly disvible by both 21 and 9?
A sum of money is to be distributed among A, B, C and D in the proportion of 5: 2:43. If C gets Tk. 1,000 more than D, what is B's share?
In the first 10 overs of a cricket match, the run rate was only 3.2. What should be the run rate in the remaining 40 overs to the target of 282 runs?
A man buys a cycle for Tk. 1,400 and sells it at a loss of 15%. What is the selling price of the cycle?
A sum of Tk. 12,500 amounts to Tk. 15,500 in 4 years at the rate of simple interest. What is the rate of interest?
A man travels for 2 hours at 30 miles an hour and then covers 60 miles in the next 3 hours. What is the average rate for the entire journey?
The average age of 24 students in a class is 14. If the teacher's age is included, the average increases by 1. What is the age of teacher?
What is the difference between 300% of 7 and 200% of 5?
Rubel can do a job in 8 days, and his son can do it in 12 day. How long would it take them to do the job if they worked together?
Mr. Zaman owned 58 of a land. He sold 15 of his share for Tk. 1,00,000. What was the value of the land?
কোন শ্রেণির জন সংখ্যার ঘনত্ব?
একটি দেশের জন সংখ্যা ৪০ বছরে দ্বিগুন হলে ঐ দেশের জন সংখ্যা বৃদ্ধির স্বাভাবিক হার কত?