১২৭৮১
The mean of the data set of 1000 items is 5. From each item 3 is subtracted and then each number is multiplied by 2. The new mean will be -
উত্তর
7
১২৭৮২
In the figure, DE is parallel to BC. If the area of a triangle ADE is half that of trapezoid DECB, what is the ratio of AE to AC-
উত্তর
1 : √3
১২৭৮৩
The simple interest on a certain sum at the rate of 5% per annum for 3 years and 7 years differs by Tk. 400. What is the principal amount?
উত্তর
Tk. 2000
১২৭৮৪
At the rate of 15% simple interest per annum, how much profit will be earned on Tk. 900 as principal in 7 years?
উত্তর
Tk. 945
১২৭৮৫
What is the difference between simple and compound interest at 8% per annum on a sum of Tk. 12,500 at the end of 2 years?
উত্তর
Tk. 80
১২৭৮৬
An accurate clock shows 3:00 PM. Through how many degrees will the hour hand rotate when the clock shows 9:00 PM?
উত্তর
180°
১২৭৮৭
What is the difference between the simple interest on a principal of Tk. 1000 being calculated at 7% per annum for 2 years and 6% per annum for 3 years?
উত্তর
Tk. 40
১২৭৮৮
It was Tuesday on January 1, 2008. What was the day of the week on Jan 1, 2009?
উত্তর
Thursday
১২৭৮৯
Find the amount if Tk. 2000 is invested at 10% compound interest p.a. for 3 years.
উত্তর
2662
১২৭৯০
A sum of money amounts to Tk. 15000 in 4 years at 25% simple interest per annum. Find the sum.
উত্তর
Tk. 7500