১২২০১
If the second book is a clothbound and the third book is a paperback, which of the following can be a cloth-bound book?
উত্তর
the ninth
১২২০২
If the first and seventh books have the same kinds of binding, which of the following must be a leather-bound books?
উত্তর
the fourth
১২২০৩
If the sixth book is a leather-bound and eighth book is a cloth-bound, which of the following must be a paperback?
উত্তর
the second
১২২০৪
Triangle ABC has the following vertices: A (1, 0), B (5, 0) and C (3, 4). Which of the following is true?
উত্তর
CA = CB
১২২০৬
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
১২২০৭
The triangular base of a prism is a right triangle of sides a and b = 2a. The height h of the prism is equal to 10 mm and its volume is equal to 40 mm³, what will be the lengths of the sides a and b of the triangle?
উত্তর
2 mm and 4 mm
১২২০৮
The sum of principal and simple interest of a certain amount of money would be Tk. 460 after 3 years from now and Tk. 500 after 5 years from now. What is the total interest rate?
উত্তর
5%
১২২০৯
A wheel rotates 10 times per minutes and moves 20 m during each rotation. How many feet does the wheel move in 1 hour?
উত্তর
20000
১২২১০
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