Question

B=(2+4+6+...+998+1000)-(1+3+5+...+997+999)

B=? Các bạn giải giúp mìk nha!

Answer 1

B=(2+4+6+...+1000)—(1+3+5+...+999)

B=(2—1)+(4—3)+(6—5)+....+(1000—999)

B=1+1+1+....+1

B=1x500

B=500

Answer 2

B=2+4+6+...+1000-1-3-5-...-999

B=(2-1)+(4-3)+...+(1000-999)

B=1+1+...+1 (500 số 1)

B=1x500

B=500

Vậy B=500 nhé

Answer 3

B = 2 + 4 + 6 + ... + 1000 - 1 - 3 - 5 - ... - 999

B = ( 2 - 1 ) + ( 4 - 3 ) + ... + ( 1000 - 999 )

B = 1 + 1 + ... + 1 ( 500 số1 )

B = 1 x 500

B = 500

Answer 4

Thanks nha!