Question

complete the pattern 1,3,6,10,15,...,28,36

Answer 1

Answer:

As we know, after 1 there is a gap of 2 numbers and after 3 there is a gap of 3 numbers, and after 6 there is a gap of 4 numbers. So it makes a pattern like this

1 , 1+2=3 , 3+3=6 , 6+4=10, 10+5=15 , 15+6=21 , 21+7=28 , 28+8= 36... and so on.

So the answer to the blank is 21.