Question

Which of the following no. Does not fit in the given series? 0,1,3,6,10,15,21,28,37,45

Answer 1

37
because the series are
0,1,3,6,10,15,21,28,37,45
0+1, 1+2, 3+3, 6+4, 10+5, 15+6, 21+7, 28+8, 36+9