I'm thinking of a number between 1 and 100.
It is a prime number.
When I add 1 to it, the number has 12 factors.
When I subtract 1 from it, the numbers could I be thinking of?
M.n giúp mk nha, mk cần gấp.
K
Khách
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Những câu hỏi liên quan
11 tháng 11 2015
mk nghĩ số đó là số 82
82+1=83 là số nguyên tố
83+1=84(có 12 ước)
thỏa mãn
NV
Nguyễn Việt Lâm
Giáo viên
29 tháng 3 2019
\(A=2+4+6+...+100\)
\(B=1+3+5+...+99\)
\(C=A-B=2-1+4-3+...+100-99\)
\(C=1+1+...+1=50\)
DT
Đỗ Thanh Hải
CTVVIP
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