Question

1,2,3,4,5=n+1
3,6,10,15=....how i find this formula?

Answer 1

what does 1,2,3,4,5=n+1 mean ?

Answer 2

N m
1 2
2 3
3 4
4 5
for N =0,m=N+1 so, we get m=2
N=1,m=N+1 so we get m=3

Answer 3

0.5(3n+n^2+2)

Answer 4

Modifying triangular numbers: \( \huge \frac{(n+1)(n+2)}2 \)

Answer 5

3,6,10 ,15..
ok.lets we check...
for foolformath:
n=0 ====)(0+1)(0+2)/2=1 not correct
for kenneth:
n=0=====) not correct to