Read the following statements and the conclusions that follow. Decide which of the two conclusions follow from the given statements.
Statements:
• All the cots are hotels.
• All hotels are sheets.
Conclusions:
1. Some cots are not sheets.
2. Some sheets are cots.

What must be the height of the cylindrical vessel of cross sectional area 100 $$ cm^{2} $$ to contain 50 litres of water ?

₹ 775, invested for 6 years gives an interest of ₹ 372. The rate of simple interest per annum is:

An object moving with a uniform velocity of $$4ms^{-1}$$possesses kinetic energy of 120 J. Find the mass of the object.

The ages of Khushi and jagriti are in the ratio 5 : 8. After 8 years the the ratio of their ages will be 3 : 4. What is the difference in their ages ?