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perfect squares = 1,4,9, 16,...64 = 8 numbers perfect cubes = 1,8,27,64 = 4 numbers Favourable outcomes = 1, 4, 8, 9, 16, 25, 27, 36, 49, 64 = ( 8+ 4 -2 common) Hence No. of favourable outcomes = 10 No. of total outcomes = 70 ∴ Required probability = 10/70 = 1/7
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140 litres of mixture X contains acetone and glycerine in the ratio 5:9, respectively. 70 litres of the mixture is withdrawn and labelled as mixture Y a...
In a mixture of 45 litres, the ratio of wine to water is 2 : 3. If this ratio is to be 1 : 3, then what is the quantity of water needed to be added?
In a mixture of juice & water, 60 litres water is mixed due to which ratio changes from 3:4 to 1:2. Find initial quantity of mixture. (in lit...
A vessel is completely filled with milk. If 48% of the milk is replaced with water then only 130 ml of milk will be left in the vessel. What is the tota...
A shopkeeper purchased 150 kg of rice at ₹40 per kg. He sold 60% of the rice at a profit of 25% and the rest at a loss of 15%. Find the overall percen...
In a mixture of milk and water, the quantity of water is 40 litres more than that of milk. When 100 litres of milk is added to the mixture, then the qua...
