Mathematics
Junior High
Solved
่ณๆฅใงใ๐ฆ
็ญใใใใใใใใชใใฎใงๆใใฆใใ ใใใผใผ๐โโ๏ธ
(9) nใฏ่ช็ถๆฐใงใใใ10<Jn<11ใๆบใใ,
V7n ใๆดๆฐใจใชใ n ใฎๅคใๆฑใใชใใใ
(9) V7n ใๆดๆฐใจใชใใฎใง, n=7kยฐ (kใฏ่ช็ถๆฐ) ใงใใใ
10<Jn <11 ใใ, 100<n<121 100<7k<121
14.2โฆใใ ใ17.2โฆ ใใใๆบใใใฎใฏk=4ใ ใใ,
n=7ร4ยฐ=112
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