M, N, O, S, T and U live on six different floors of the same building. The lowermost floor in the building is numbered 1, the floor above it, number 2 and so on till the topmost floor is numbered 6. S lives on floor numbered 5. O lives on a floor above S. Only T lives below N. U lives on an even numbered floor. How many people live below M?
A boat takes 75 minutes to go 62.3 km upstream. The ratio of the speed of the boat in still water to that of the stream is 3 : 2. How much total time (in hours) will the boat take to go 67.6 km upstream and 35.8 km downstream?
Tushar has borrowed an amount of ₹2,00,000 from a bank to start a business. How much simple interest (in ₹) will he pay at a rate of 8% per annum after 4 years?
A hollow spherical shell is made of a metal of density 11 g/cm³. Its internal and external radii are 3 cm and 6 cm, respectively. What is the weight (in kg) of the shell? (Use π = \( \frac{22}{7} \), Density = \(\frac{\text{Mass}}{\text{Volume}}\))
