SAT数学试题If n is any prime number greater than 2,which of the followying CANNOT be a prime numberA n-4B n-3C n-1D n+2E n+5
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![SAT数学试题If n is any prime number greater than 2,which of the followying CANNOT be a prime numberA n-4B n-3C n-1D n+2E n+5](/uploads/image/z/5430349-37-9.jpg?t=SAT%E6%95%B0%E5%AD%A6%E8%AF%95%E9%A2%98If+n+is+any+prime+number+greater+than+2%2Cwhich+of+the+followying+CANNOT+be+a+prime+numberA+n-4B+n-3C+n-1D+n%2B2E+n%2B5)
SAT数学试题If n is any prime number greater than 2,which of the followying CANNOT be a prime numberA n-4B n-3C n-1D n+2E n+5
SAT数学试题
If n is any prime number greater than 2,which of the followying CANNOT be a prime number
A n-4
B n-3
C n-1
D n+2
E n+5
SAT数学试题If n is any prime number greater than 2,which of the followying CANNOT be a prime numberA n-4B n-3C n-1D n+2E n+5
这里prime number是素数的意思,n是比2大的素数,那么必然为奇数,n+5为大于2的偶数,必为合数
当n=5时,n+5=10,有1,2,5,10四个约数,不是质数,所以E错误。