There are 5.5 billions bacteria. If 1 in 75 millions can do mutation how many bacteria was there possible can do mutation?
If there are 10 gifts and 25 blank seats then what are the probability to win a prize?
The total expense of 15 employees is 27000 including 15% gratuty of service. What is per person expense excluding the gratuty?
5 odd consecutive series, there 6th number is 15.4th number was?
If the price of a product was reduced 10% then 20% then 40%, what was the total discount price?
In a office, 72% people liked Tea and 44% people liked Coffee. If each of them liked either Coffee or Tea and 40 liked both, what is the number of employee?
If you need 98 ounces of iron and 2 ounces of carbon to make a sheet of steel. How much iron you need in ounces to make 12 sheet steel?
The length of an arc is 7π. If the diameter of the circle is 14, what is the degree of central angle by that arc?
If a hour-hand of a clock go anticlock wise from 2 to 9 what angle the hour hand pass?
50, 30, 40, 20, 30, ……. What number will come next?
What is the 10th number of the following series? 1, 5, 9, 13 ,.........?
Find the missing number in the series 3, 6, 18, 72, 360, _
ABC is a triangle where the angle ABC = 96° and AB = BC what is the measurement of the angle ACB?
△ABC is a right angle ∠ACB=90° , AC=16, BC=12, CD is perpendicular to AB and AD = 12.8. How long is CD?
A circle whose center is at origin passes through point (4, 3). The length of the radious of this circle B is?
What is the measurement of each exterior angle of a regular polygon if it has 12 sides?
An equilateral triangle is inscribed in a circle, each side measuring 15 cm. What is the radious of this circle?
The length of a plot is 80 m. and the breadth is 60 m. A pond was excavated in the plot. If the width of each side of the border around the pond is 4 meter, determine the area of the border of the pond.
Find out the exact value of cos8π3
Diameter of a circle was 8 cm. If diameter is 12 cm. what is the area?
If a boy takes as much time in running 10 min. a car takes in covering 25 m, the distance covered by the boy's during the time the car covers 1 km is?
The sum of the ages of the son and father is 120 years, the father's age is 3 times that of the son. What is the age of the father?
If a copier makes 3 copies every 4 seconds, then continues at this rate, how many minutes will it take to make 9,000 copies?
Shima has 45th of a tank of fuel in his car. He uses 110th fraction of a tank per day. How many days will his fuel last?
A piece of ribbon 8 yeard long is used to make bows requiring 15 inches of ribbon for each. What is the maximum number of bows that can be made?
The length of rectangle ABCD is 65th of it's breath. Its perimeter is 132. What is it's area?
A man deposit Tk 600 in a bank at 10% interest compounded annually. What will be the total amount including interest at the end of the second year?
X sells a product at 12.5% loss. If he sells it Tk. 30 more than what he does, he makes a profit of 25% on this cost. What is the cost of the product?
A and B invest in a business in the ratio 3:2. If 5% of the total profit goes to charity and A's share is Tk. 855, total profit is _?
A man brought a sharee by 500 taka and sold at 550 taka after 6 months. What is his yearly gain percentage?
9, 36, 81, 144, ... What will be the next number of this series?
Circle O with ∠AOC and ∠ABC is shown in the diagram below. What is the ratio of ∠AOC to ∠ABC?
1 : 2
3 : 1
2 : 1
1 : 3
From 101 to 200, how many are the prime number?
cosecθ + cotθ=56, what is the value of cosecθ - cotθ?