India celebrates National Mathematics Day on December 22 to commemorate the birth anniversary of the Indian mathematician Srinivasa Ramanujan. He shaped twentieth-century mathematics with his ...

1 3, 2 3, 3 3, 4 3, 2. Arithmetic Progression (AP): It is a list of numbers in which each term is obtained by adding a fixed number to the preceding term except the first term. 3. Common difference (d ...