The outer diameter of a hollow cylindrical brass rod is 9.1 cm. The rod is 35mm thick and is 40cm long. If the weight of 1 cubic centimeter of brass rod is 0.5 Kg, then find the total weight of the rod.
The outer radius of cylinder = 9.1/2 = 4.55 cm The inner radius of cylinder = 4.55-3.5cm = 1.05 cm 
In how many ways can the letters of the word ‘MEDICAL’ be rearranged so that the vowels never come together?
Find the quantity of arrangements of the letters of the word INDEPENDENCE if all the vowels always occur together?
Geography books are always together.
Find the quantity of methods of picking 4 cards from a set of 52 playing cards if four cards are of the same unit?
In how many different ways can the letters of the word ‘PADDLED’ be arranged?
Out of 6 men and 3 women a committee of 3 members is to be formed so that it has 2 men and 1 woman. In how many different ways can this be done?
In how many different ways can the letters of the word QUANTITY be arranged so that the vowels always come together?
A committee of 5 members is to be formed out of 6 men and 4 women. In how many ways can a committee consisting of atleast 1 woman be formed?
Find the number of words that can be formed by using all letters of the word ' PAINTING', if it starts with letter A and end with letter T.
In how many different ways can the letters of the word “DISCHARGE” be arranged in such a way that the vowels always come together?
