Civil Services Examination · Question 22
What is the minimum number of times one needs to measure to get 298 litres of water from a tank, if the measuring cylinders have capacities 1 litre, 6 litres, 25 litres and 100 litres?
Show answer & explanation
Answer: (B) 5
Explanation
Take out 100 litres three times (300 L) and put back 1 litre twice: 5 measurements. Four measurements cannot make 298.