Question

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

Answer 1

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

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

=1+1+1+1+1

=5

Answer 2

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

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

=1+1+1+1+1

=5

Answer 3

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

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

=1 + 1 + 1 + 1 + 1

=5