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Start learning 50% faster. Sign in nowATQ, Probability of choosing the right answer = 1/2 Probability of choosing the wrong answer = 1/2 Number of ways to choose 1 correct answer out of 3 = (3/1) = 3 So, the required probability = 3 × (1/2)1 × (1/2)2 = (3×1×1)/(2×2×2) = 3/8
An edge of a variable cube is increasing at the rate of 2 cm/s. How fast is the volume of the cube increasing when the edge is 12 cm long?
If the Ratio of the cuboid of the length, breath and height is 2:3:5. If length, breadth and height is increased by 25%, 10%, 30% respectively then find...
A cone is parallel to its base in such a way that the volume of the smaller cone is 1/2197 times of the bigger cone. Find the height of the smaller co...
The curved surface area of a hemisphere is 72π cm2, then its radius is:
If base of a prism is square of side 9 cm & height is 32 cm . What is the volume of prism?
A square whose diagonal is 12√ 2cm is made base of the pyramid. if height of the pyramid is 15cm, then what is the total surface area of the pyramid.(...
Two paths of width 4 metres are to be made in the centre of rectangular field such that they are perpendicular to each other. Find the area (in m2<...
The base of a triangle is 18 cm and height is 14 cm. The height of another triangle of double the area having the base 21 cm is:
Two equal vessels A and B contain 70% of milk and 60% of milk respectively and the remaining sugar. In which 30 kg of mixture is taken out from vessel A...
Mr. Shiva invested equal amount of money in two private firms which gives 15% simple interest per annum for 3.5 years and 5 years respectively. If the d...
