Definition: In the sequencial series, if commen difference between any two successive terms is same the sequence is called in AP. Ex: 2,4,6,8,10... here, first term=t1=a=2 second term=t2=4 ...
If A completed the work in 4 days and B completed the same work in 5 days. How many days will they take on working together? Answer: Let total work is (lcm of 4 and 5) = 20 A's work in 1...