Question

32 - 30 + 28 - 26 + ... + 4 - 2

 

Answer 1

32 - 30 + 28 - 26 + ... + 4 - 2

= (32 - 30) + (28 - 26)+ ( 24 - 22) + ( 20 - 18 ) + (16 - 14) + ( 12 - 10) + ( 8 - 6)  + (4 - 2)

= 2 + 2 + 2 + 2 + 2 + 2 + 2 +2

=16

Answer 2

32 - 30 + 28 - 26 + ... + 4 - 2

= (32 - 30) + (28 - 26) + (25 - 23) + ... + (8 - 6) + (4 - 2)

= 2 + 2 + 2 + ... + 2 + 2
= 2 . 8 = 16

Answer 3

\(\left(32-30\right)+\left(28-26\right)+...+\left(4-2\right)\)

\(\Rightarrow2+2+...+2\)

\(\Rightarrow2\times16=32\)