Question

1+2+3+4+5+6+7+8+9+10+11=..........

( Tình nhanh nha)

Answer 1

66 bn nha

Answer 2

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

=  10 + 10 +10 +10 +21

=61

Answer 3

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

=10+10+10+10+10+15

=50+15

=65

Answer 4

   1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11

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

= 12 + 12 + 12 + 12 + 12 + 6

= 12 x 5 + 6

= 60 + 6

= 66

Answer 5

1+2+3+4+5+6+7+8+9+10+11

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

=12+12+12+12+12

=12x5

=60

Answer 6

1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11

= (1 + 11) x 11 : 2 

= 12 x 11 : 2

= 132 : 2 

= 66 nha!

Answer 7

1+2+3+4+5+6+7+8+9+10+11

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

=12+12+12+12+12+6

=12x5+6

=60+6

=66

Answer 8

câu trả lơi của mình là 66

Answer 9

bang 66 h mik nha

Answer 10

66 h mik nha mik h lai

Answer 11

1+2+3+4+5+6+7+8+9+10+11

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

=12+12+12+12+12+6

=12x5+6

=60+6

=66

Answer 12

bằng 66 các bạn giỏi quá

Answer 13

66 bok

Answer 14

= 66 nhé