৫৬৫১
A box contains 4 tennis ball, 6 season and 8 dues balls. 3 balls are randomly drawn from the box. What is the probability that the balls are different?
উত্তর
4/17
৫৬৫২
On dividing an individual number by 342, we get 47 as remainder. If the same number is divided by 18, what will be the remainder?
উত্তর
11
৫৬৫৩
Rahim and Karim donated Tk. 100 each in charity. Karim gives each Tk. 1 more than Rahim and Rahim distributes money to 5 more people than Karim. How many people are there in this charity?
উত্তর
45
৫৬৫৪
A square is inscribed in a circle of diameter 2a and another square is a circumscribing circle. The difference between the areas of outer and inner squares is -
উত্তর
2a 2
৫৬৫৫
The income of ‘A’ is 20% higher than that of ‘B’. The income of ‘B’ is 25% less than of ‘C’. What percent less is A’s income from C’s income?
উত্তর
10%
৫৬৫৭
There are n students in a school. If r% among the students are 12 years or younger, which of the following expressions represents the number of students who are older than 12?
উত্তর
n(100 - r) / 100
৫৬৫৮
125 gallons of a mixture contains 20% water. What amount of additional water should be added such that water content be raised to 25%?
উত্তর
8(1/3) gallons
৫৬৫৯
The sum of squares of two numbers is 80 and the square of difference between the two numbers is 36. Find the product of two numbers
উত্তর
22
৫৬৬০
A student loses 1 mark for every wrong answer and scores 2 marks for every correct answer. If he answers all the 60 questions in an exam and scores 39 marks, how many of them were correct?
উত্তর
33