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(1+2+3...+2018):2019

Răspuns :

Răspuns:

1+2+3+....+2018 :2019

=2018*2019:2:2019

=1009*1 (am grupat 2019:2019 si 2018:2)

=1009

( 1 + 2 + 3 + ... + 2018 ) : 2019 =

( 2018 × 2019 : 2 ) : 2019 =

( 4074342 : 2 ) : 2019 =

2037171 : 2019 = 1009