TCS Company Numerical Ability Permutation and Combination

Gold is 19times as heavy as water and copper is 9 times as heavy as waterIn what ratio should these be mixed to get an alloy 15times as heavy as watera11b23c12d32

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TCS Other Question
1 Consider two tumblers the first containing Water and next contains coffee Suppose you take one spoon of water out of the first tumbler and pour it into the second tumbler After moving you take one spoon of the mixture from the second tumbler and pour it back into the first tumbler Which one of the following statement holds nowa There is less coffee in the first tumbler than water in the second tumblersb There is more coffee in the firs tumbler than water in the second tumblerc There is as much coffee in the first tumbler as there is water in the second tumblerd None of the statements holds true 1 Six friends decide to share a big cake Since all of them like the cake they begin quarreling who gets to first cut and have a piece of the cake One friend suggests that they have a blindfold friend choose from well shuffled set of cards numbered one to six You check and find that this method works as it should simulating a fair throw of a die You check by performing multiple simultaneous trials of picking the cards blindfold and throwing a die You note that the number shown by the method of picking up a card and throwing a real world die sums to a number between 2 and 12 Which total would be likely to appear more often 89 or 10