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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: bài 1 a 3 bé 3^n bé 234 b 8.16 lớn 2^n lớn 4

Toán Lớp 6: bài 1
a 3 bé 3^n bé 234
b 8.16 lớn 2^n lớn 4

Comments ( 2 )

  1. 1.
    a) Sửa lại là 243 nhé
    3=3^1
    243=3^5
    Ta có :
    3^1<3^n<3^5
    ⇒1<n<5
    ⇒n={2;3;4}
    b) 8.16>2^n>4
    8.16=2^3. 2^4=2^7
    4=2^2
    Ta có :
    2^7>2^n>2^2
    ⇒7>n>2
    ⇒n={6;5;4;3}

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222-9+11+12:2*14+14 = ? ( )

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