Explaination :
Remember that common difference is simply calculated by substracting the second number from first number. i.e., (4 - 2 = 2)
Therefore,
Additional Information :
- Arithmetic progression (A.P.) is a sequence in which each term can be found by adding a certain quantity to its preceding term
- Difference between two consecutive terms is called common difference
- Progression means it's a type of sequence in which each term is related to its predecessor and successor.