Question

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

Answer 1

45 nha

Answer 2

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

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

=10+10+10+10+5

=45

Answer 3

=(1+9)+=(2+8)+(3+7)+(4+6)+5=10+10+10+10+5=45

Answer 4

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

  = 10 + 10 + 10 + 10 + 5

 = 40 + 5

 = 45  

Answer 5

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

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

= 10 + 10 + 10 + 10 + 5

= 10 x 4 + 5

= 40 + 5

= 45

Answer 6

1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 

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

= 10 + 10 + 10 + 10 + 5

= 10 x 4 + 5

= 40 + 5

= 45

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