Hi

 Can you figure out The pattern?

1 3 9 24 40 90 147 224 324 450 ??? 

THE Next must be 605.

I Will show you THE pattern 

1

1+2=3

(1+2)*3=9

(1+2+3+4)*5=40

(1+2+3+4+5)*6=90

(1+2+3+4+5+6)*7=147

(1+2+3+4+5+6+7)*8=224

(1+2+3+4+5+6+7+8)*9=324

(1+2+3+3+5+6+7+8+9)*10=450

(1+2+3+4+5+6+7+8+9+10)*11=605

Just för fun

This is just basic arithmetic, nothing complicated.

Moikka.