A doctor knows that 90% of patients have flu and 10% have allergy. Rash appears in 8% of flu patients and in 95% of allergic ones. If a patient shows r...
A boat can travel 225 km downstream in 5 hours. If the speed of the boat in still water is 7 times the speed of the stream, how m...
If f(x) is periodic of period T, then:
A rectangular garden is 20 m long and 15 m wide. If a path of width 2 m is built around the garden, what is the area of the path?
Let Z = (1+3i)/(1-2i) .Then the argument of z lies in which quadrant?
The average age of three friends Maya, Nirmal, and Raju is 27 years. The age ratio of Nirmal to Raju is 9:5, and Maya is 11 years...
A train travelling at a speed of 80 km/h, takes 27 seconds to cross a pole. If the train increased its speed by 10 km/h, how long would it take to cross...
If detA = 3, detB = 2, then det(AB) =?If |x + 1| + |x − 2| ≥ 4, then x lies in:
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