Question

answe the following questions

1+2+3+4

2+4+6+8

1+3+5+7

1+4+9+16

Answer 1

1st = 10
2nd= 20
3rd= 16
4th= 30

Answer 2

1+2+3+4=10
2+4+6+8=20
1+3+5+7=16
1+4+9+16=30