PRJAN15A - An Arithmetic Problem
A sequence is an arithmatic sequence if every two succesive number has same difference. Suppose this is a sequence of numbers:
a1, a2, a3,....................an
This is an arithmatic sequence if ai-ai+1 is same for each i from 1 to n-1.
You are given first 3 terms of a sequence and the value of n. If it is an arithmatic sequence you must print the nth term. Otherwise you must print “Error”.
In First line there will an integer T denoting number of test cases. Each of the next 3 lines will contain 4 integers a1, a2, a3 and n.
In each line specify the case number and print the answer.
-300<=a1, a2, a3<=300
1 2 3 10
1 4 3 10
15 30 45 5
Case 1: 10
Case 2: Error
Case 3: 75
Problem-setter: Shafaet Ashraf
Moved to tutorial, it is very simple.
it must be a tutorial question..!!
it should be tutorial
Vamsi Krishna Avula: