log26+log223= কত ?
যদি a,b বাস্তব সংখ্যা এবং a≠0,b≠0 হয়, তবে a2b°+b2a° -এর মান
xy+yx=3 হলে, x2y2+y2x2 এর মান কত ?
যদি (125)2x+3=53x+6 হয়, তবে x= কত ?
log381= কত ?
সূর্যের উন্নতি কোণ 60° হলে, একটি গাছের ছায়ার দৈর্ঘ্য 10 মিটার হয় । গাছটির উচ্চতা কত? ।
Monjur is 20 years older than Siad. However,5 years ago Monjur was twice as old as Siad.How old Monjur now ?
Mujahid can do a work in 8 days, while has colleagues Asad takes 12 days and Mithun takes 16 days to complete the same.Mujahid and Asad started the work and after few days Asad left the work keeping it incomplete. Rest of the work was completed by Mujahid and Mithun in 2 days.How long it took to complete the whole work?
If the integer x is divisible by 5 but not by 2, then which one of the following is never an integer ?
What is the smallest number that should be added to 100 so that it can be completely divided by all the prime numbers between 10 to 15 ?
The element in the position marked by __ in the series B, D, F, ......, 11,_____ is
How much is the weight of 5 liter of water if 1 cc of it weighs 1gm?
The average age of 6men, 8women and 1 young boy is 35 years. What is the age of the boy,if the average age of the men is 40 and that of the women is 34?
A farmer employed 36 labor to dig a pond in 15days, but after 10 days of work he discovered that only 50% of the work was done. How many additional labors are to be employed for completing the job in time?
A train leaving Dhaka at 6am reaches Mymansing at 10 am and another train leaving Mymensing at 7 am and reaches Dhaka at 12 noon. At what time the two trains running opposite direction should meet?
A bank recruited 126 new employees and found that the total number of its employees has increased by 14%. What was the number of employees in the bank before the new recruitment ?
In an examination 75% of the students passed in mathematics, 45% passed in general science and 30% passed in both subject. What per cent of the students have failed in both subject?
The length and breadth of a rectangle are 24 meters and 12 meter respectively. By what percent the area of the rectangle will increase if its length and breadth are increased by 6%?
What amount of money (in TK) wil grow to Tk. 2380 in eight years if the simple rate of interest applied is 5% per annum?
What would be the ratio of x and y if 5x+9y=61 and 7x+3y=47?