Question
Axe speaks truth only when Wye does not speak truth,
then what is the probability that Zed does not speak truth on a question? There are three people – Axe, Wye and Zed. Probability that Axe speaks the truth is 7/20, probability that Wye speaks the truth is 3/5 and probability that Zed speaks truth is 5/6. For a particular question asked, at most 2 people speak truth. All people answer to a particular question asked.Solution
Case (1) : Wye does not speak truth So, Axe speaks truth here Probability that Zed does not speaks truth = 7/20 ×(1-3/5)×(1-5/6) = 7/300 Case (2) : Wye speaks truth So, Axe does not speaks truth here Probability that Zed does not speaks truth = (1-7/20)× 3/5 ×(1-5/6) = 13/200 Required Probability = 7/300+ 13/200 = 53/600
If the area of a triangle is 1080 cm2 and base: corresponding altitude is 3:5, then the altitude of the triangle is:
The difference between each Internal angle and each external angle of a polygon is 60°. Find the number of Sides.
Three circles of radius 6 cm are kept touching each other. The string is tightly tied around these three circles. What is the length of the string?
If the volume of a cuboidal tank is 1008 m3Â and the ratio of the length, width and height of tank is 7:6:3 respectively then find the height...
The length of a width is 21 cm and the side of a square is 25 cm less than the length and width of the rectangle. If perimeter of the rectangle is 30 cm...
Find the circumference and area of a circle with radius 10.5 cm. Take π = 22/7.
Perimeter of square is 48 cm and length of a rectangle is equal to side of square and breadth of rectangle is 4 cm less than length of the rectangle. F...
If sec 2θ = cosec (θ – 36°), where 2θ is an acute angle, find the value of θ.
Perimeter of a rectangle is 40% more than that of a square of side 25 cm. If the difference between the length and breadth of the rectangle is 12 cm, re...
If the diameter of a solid hemisphere is 12 cm, then its volume is taken π =22/7
