Question

what is the nth term of the series 1+3+6+10+15+_ _ _is​

Answer 1

Answer:

45 is the answer

Step-by-step explanation:

count first time three second time three third time four fourth time five fifth time six and it goes on till nine

Answer 2

Step-by-step explanation:

The series we are considering is

1,3,6,10,15,21,…..

These are all the sum of natural numbers upto the n

So, in this series

1st Term = 1

2nd Term = 1+2 = 3

3rd Term = 1+2+3 = 6

4th Term = 1+2+3+4 = 10

So,

Term - n = 1+2+3+….+n = n(n+1)/2

That’s your answer n(n+1)/2

plz mark me brainliest