Question

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

Answer 1

1+2+3+4+5+6+7+8+9+10

=(1+9)+(2+8)+(4+6)+(7+7)+5+10

=10+10+10+10+5

=40+5

=45

Answer 2

1+2+3+4+5+6+7+8+9+10=(1+9)+(2+8)+(3+7)+(4+6)+10+5=10+10+10+10+10+5=55

Answer 3

1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10

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

= 10 + 10 + 10 + 10 + 15

= 40 + 15

= 55

k mk nha bạn

Mk cảm ơn các bạn nhiều

Thank you very much

( ^ _ ^ )

Answer 4

1+2+3+4+5+6+7+8+9+10

=[1+9]+[2+8]+[3+7]+[4+6]+[5+10]

=10+10+10+10+15

=40+15

=55

Answer 5

bang 55 nha

Answer 6

=45 ko sai dau