What is the remainder when the two-digit, positive integer x is divide...
(1) The sum of the digits of x is 5 --> x can be 14, 41, 23, 32, or 50. Each of this numbers gives the remainder of 2 when divided by 3. Sufficient.
(2) The remainder when x is divided by 9 is 5 --> x=9q+5=9q+3+2=3(3q+1)+2--> the remainder when x is divided by 3 is 2. Sufficient.
View all questions of this test
What is the remainder when the two-digit, positive integer x is divide...
To find the remainder when a two-digit positive integer x is divided by 3, we need to determine the value of x modulo 3.
Statement 1: The sum of the digits of x is 5.
This statement does not provide enough information to determine the remainder when x is divided by 3. For example, if x is 14, the remainder when divided by 3 is 2, but if x is 23, the remainder is 1. Therefore, statement 1 alone is insufficient.
Statement 2: The remainder when x is divided by 9 is 5.
This statement also does not provide enough information to determine the remainder when x is divided by 3. For example, if x is 23, the remainder when divided by 3 is 2, but if x is 32, the remainder is 1. Therefore, statement 2 alone is insufficient.
Combining both statements:
By considering both statements together, we can determine the value of x modulo 3. Since the remainder when x is divided by 9 is 5, we know that x is of the form 9k + 5, where k is an integer. Additionally, since the sum of the digits of x is 5, the possible values for x are 14, 23, 32, etc.
Analyzing the possible values of x modulo 3:
For x = 14, the remainder when divided by 3 is 2.
For x = 23, the remainder when divided by 3 is 2.
For x = 32, the remainder when divided by 3 is 2.
From the analysis above, we can see that regardless of the specific value of x, the remainder when x is divided by 3 is always 2. Therefore, by combining both statements, we can answer the question and statement 1 and 2 together are sufficient to answer the question.
Therefore, the correct answer is (C) Each statement can answer the question individually.
What is the remainder when the two-digit, positive integer x is divide...