২৬৪৭১
If a sequence is defined by the rule an=(an-1-3)2, what is a4(the fourth term of the sequence ) if a1 is 1?
উত্তর
25
২৬৪৭২
A man 6 feet tall casts a shadow 4 feet long, at the same time a flagpole casts a shadow that is 50 feet long. How tall is the flagpole?
উত্তর
75 feet
২৬৪৭৪
A figure consists of a square of side z meter with semicircle drawn on the outside of the square. The area (in m2) of the figure so formed will be
উত্তর
z2+πz28
২৬৪৭৬
A picture is copied onto a sheet of paper, which measures 8.5 inches by 10 inches. A border of 1.5 inch is left all around. What is the area , in squar inches , covered by yhe picture?
উত্তর
38.5
২৬৪৭৮
Three pipes P,Q and R can fill a tank in 6 hours. After working all three together for 2 hours. R is closed and P and Q can fill the remaining part in 7 hours. The number of hours taken by R alone fill the thank is --
উত্তর
14
২৬৪৭৯
Present ages of Samad and Akmal are in the ratio of 5:4 respectively. Three years later ,the ratio of their ages will become 11:9 respectively. What is akmals present age in years?
উত্তর
24
২৬৪৮০
In a triangle the lengths of two sides are 5 and 9, the length of the third side is represented by x. Which statement is always true?
উত্তর
4