(3737 x 50 – 5050 x 36) : ( 1 + 2 + 3 + 4 +…………+ 100) 06/08/2021 Bởi Bella (3737 x 50 – 5050 x 36) : ( 1 + 2 + 3 + 4 +…………+ 100)
A = (3737 x 50 – 5050 x 36) : ( 1 + 2 + 3 + 4 +…………+ 100) A = D : F Ta có : D = 3737 x 50 – 5050 x 36 D = 37 x 101 x 50 – 5050 x 36 D = 37 x 5050 – 5050 x 36 D = ( 37 – 36 ) x 5050 D = 5050 . Ta có : F = 1 + 2 + 3 + 4 +…………+ 100 F = $\frac{100 x 101}{2}$ = 5050 => A = D : F = 5050 : 5050 = 1 Vậy A = 1 Bình luận
5050$\frac{5050}{(100+1)100/2}$ =$\frac{5050}{5050}$ =1
A = (3737 x 50 – 5050 x 36) : ( 1 + 2 + 3 + 4 +…………+ 100)
A = D : F
Ta có : D = 3737 x 50 – 5050 x 36
D = 37 x 101 x 50 – 5050 x 36
D = 37 x 5050 – 5050 x 36
D = ( 37 – 36 ) x 5050
D = 5050 .
Ta có : F = 1 + 2 + 3 + 4 +…………+ 100
F = $\frac{100 x 101}{2}$ = 5050
=> A = D : F = 5050 : 5050 = 1
Vậy A = 1