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余数的性质   题数:17
If n is a positive integer and r is the remainder when (n-1)(n+1) is divided by 24, what is the value of r?(1) 2 is not a factor of n.(2) 3 is not a factor of n.
What is the remainder when the positive integer n is divided by 3?(1) The remainder when n is divided by 2 is 1.(2) The remainder when n + 1 is divided by 3 is 2.
What is the remainder when the sum of the positive integers x and y is divided by 6?(1) When x is divided by 6, the remainder is 3.(2) When y is divided by 6, the remainder is 1.
If x is a positive integer, is the remainder 0 when (3x + 1)/10?(1) x = 3n + 2, where n is a positive integer.(2) x > 4
If x is a positive integer, is the remainder 0 when 3x + 1 is divided by 10?(1) x = 4n + 2, where n is a positive integer.(2) x > 4
Seven different numbers are selected from the integers 1 to 100, and each number is divided by 7. What is the sum of the remainders?(1) The range of the seven remainders is 6.(2) The seven numbers selected are consecutive integers.
If x and y are positive integers and r is the remainder when 34x+2 + y is divided by 10, what is the value of r?(1)   x = 25(2)   y = 1
What is the remainder when the positive integer n is divided by the positive integer k, where k > 1? (1) n = (k+1)3 ​(2) k = 5
If k is a positive integer, what is the remainder when 2k is divided by 10 ?(1) k is divisible by 10.(2) k is divisible by 4.
What is the remainder when the positive integer n is divided by the positive integer k, where k > 1?(1) n = (k+1)3(2) k = 5
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