Question

x=1+3+5+7+9+11+13+15+17+19

Answer 1

x= 100

Answer 2

\(x=1+3+5+7+9+11+13+15+17+19\)\(x=\left(1+19\right)+\left(3+17\right)+\left(5+15\right)+\left(7+13\right)+\left(9+11\right)\)

\(x=20+20+20+20+20\)

\(x=20\times5=100\)

Answer 3

x​ = 100

nhé bn

Answer 4

x=100

Answer 5

x=100

Answer 6

x=100

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Answer 7

x = 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19

x =              100