Question

Tinha nhanh ( 1 + 3 + 5 + 7  + ... + 2003 + 2005 ) x125125 x 127 -127127 x 125 )

Answer 1

(1+3+5+7+...+2003+2005)×(125125×127-127127×125)

=(1+3+5+7+...+2003+2005)×0

=0

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Answer 2

( 1 + 3 + 5 + 7 + ... + 2003 + 2005 ) x 125125 x127 - 127127 x 125

= ( 1 + 3 + 5 + 7 + ... + 2003 + 2005 ) x ( 125 x 1001 x 127 ) - ( 127 x 1001 x 125 )

= ( 1 + 3 + 5 + 7 + ... + 2003 + 2005 ) x 0

= 0

Answer 3

 ( 1 + 3 + 5 + 7  + ... + 2003 + 2005 )x125125 x 127 -127127 x 125 )

= ( 1 + 3 + 5 + 7  + ... + 2003 + 2005 ) x 0

= 0

  

Answer 4

 ( 1 + 3 + 5 + 7  + ... + 2003 + 2005 ) x(125125 x 127 -127127 x 125 )

= ( 1 + 3 + 5 + 7  + ... + 2003 + 2005 )x( 125x1001x127-127x1001x125)
= ( 1 + 3 + 5 + 7  + ... + 2003 + 2005 )x0

=0

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Answer 5

( 1 + 3 + 5 + 7 + ... + 2003 + 2005 ) x 125125 x 127 - 127127 x 125

= ( 1 + 3 + 5 + 7 + ... + 2003 + 2005 ) x [ ( 125 x1001 x 127 ) - ( 127 x 1001 x 125 ) ]

= ( 1 + 3 + 5 + 7 + ... + 2003 + 2005 ) x 0

= 0

Answer 6

(1 + 3 + 5 + 7 + ... + 2003 + 2005) x (125125 x 127 - 127127 x 125)

= (1 + 3 + 5 + 7 + ... + 2003 + 2005) x (125 x 1001 x 127 - 127 x 1001 x 125)

= (1 + 3 + 5 + 7 + ... + 2003 + 2005) x 0

= 0