By how many atomic mass units do subsequent members of homologous series differ?

P, Q and R are channels which discharge solutions A,B and C respectively in a tank. When the tank is empty and all the three channels are opened what is the proportion of the solution C in the tank after 3 minutes, if the channels P, Q and R can fill the tank from empty to full in 30 minutes and 20 minutes and 10 minutes respectively when they are opened one at a time.

Rs. x invested at 8% simple interest per annum for 5 years yields the same interest as that on Rs. y invested at 7.5% simple interest per annum for 6years. Find x : y.

If tanα= 2 + 1, then the value of tanα - cotα is

The maximum number of electrons that can be accommodated in a shell depends on the formula

The price of a Television is Rs.14000 inclusive of VAT. If the rate of VAT is 12%, find the basic price of the Television.

Consider the given argument and decide which of the given assumptions is (are) implicit.

Argument :

An army general said 'Shoot Now' to the soldier.

Assumptions :

1. The soldier knows where and what to shoot.

2. The army general doesn't know to shoot.

Select the figure which does NOT belong to the group.