6 years, 6 months ago
6 years, 6 months ago
series is in the form of 1,2 1,3,2 1,4,3,2 1,5,4,3,2 as you can see series is will go on like this till the 125th term by then you can say that when 1,2 there is no. of 1=1 when 1,3,2 the no. of 1's are=2 when 1,4,3,2 the no.of 1's are=3 to simplify we can say that no of 1's =next term near to 1 -1 same goes for 2 and 3 and so on