example 1

There are 8 cars plying between two towns A and B. In how many ways can a person go from one town to the other and return by a different ca..

Mark a point O on a sheet of paper. Mark another point on the same sheet of paper such that OA=2.5 cm (or any convenient distance). Now mark B, C, D, E, F all coplanar with O and A and also such that each of them is at a distance of 2.5cm from O. Join all these points. What is the pattern of th..

If R = {(1,2), (1,5),(2,4),(3,5)} Domain of R - 1 = {2, 5, 4} = Range of R Range of R - 1 = {1, 2, 3} = Domain o..

01. If P(n) is the statement n 2 -n+41 is prime, prove that P(1), P(2) are true but P(41) is not tru..

Find the remainder when 2x 3 +4 is divided by a) x-1 b) x-2 d) x+1..

What is the number of valence electrons, valency and valence shell of the atom whose atomic number is 17? K, L, M Electron configuration : 2, 8, 7 Number of valence electrons = 7 Valency = 8 - 7 = 1 Valence shell ..

An oxide of iron contains 72.41% of iron. Calculate the empirical formula for the oxide of iron [Fe = 56; O=16..

Calculate the percentage by weight of all the elements present in calcium carbonat..

Read the telephone conversation below, and write a message to be left at Renu's desk, telling her what the caller wanted to convey to her, in about 50 word..

Plot the graph of 2x+3y=..