Number System
When 732 is subtracted form the square of a number, the answer that is obtained is 5280. What is the number?

103
99
97
101

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Number System
In a five-litre mixture of milk and water the portion of water is 30%. How much milk should be added to the mixture so that the portion of water reduces to 5% ?

25 litre
21 litre
29 litre
17 litre

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