১১০৮১
There are 3 green, 4 orange and 5 white color bulbs. If a bulb is picked at random, what is the probability of having either a green or a white bulb?
উত্তর
2/3
১১০৮২
The ratio of Pens ant Pencils in a shop is 3 : 2 respectively. The average number of Pens and Pencils is 180. What is the number of Pencils in the shop?
উত্তর
144
১১০৮৩
A, B and C investment in a partnership in the ratio of 5 : 6 : 8. The ratio of their profit is 5 : 3 : 12. Find the ratio of time for their investment?
উত্তর
2 : 1 : 3
১১০৮৪
P, Q and R start a business. P invests 3 times as much as Q invests 2/3rd as much as R invests. Find the ratio of capitals of P, Q and R ?
উত্তর
6 : 2 : 3
১১০৮৫
A dishonest milkman professes to sell his milk at cost price but he mixes it with water and thereby gains 25% . The percentage of water in the mixer is:
উত্তর
20%
১১০৮৬
How many iron rods, each of length 7m and diameter 2cm can be made out of 0.88m3 of iron?
উত্তর
400
১১০৮৭
A is three times as old as B. C was twice-as old as A four years ago. In four years' time. A will be 31. What are the present ages of B and C ?
উত্তর
950
১১০৮৯
What will be simple interest for 1 year and 4 months on a sum of Tk. 25,800 at the rate of 14% per annum?
উত্তর
Tk. 4,816
১১০৯০
An error 2% in excess in made while measuring the side of a square. The percentage of error in the calculated area of the square is:
উত্তর
4.04%