There are two natural numbers m and n (m\gt n). When m is divided by 12, it leaves a remainder 4. When n is divided by 12, it leaves a remainder 6. Which of the following statements is/are correct?<br>I. The remainder when (m+n) is divided by 12 is 10.<br>II. The remainder when (m-n) is divided by 12 is 10.<br>Select the correct answer using the code given below :
- A. I only
- B. II only
- C. Both I and II ✓
- D. Neither I nor II
Correct Answer: C. Both I and II
Explanation
Let m = 12a+4 and n = 12b+6. For I: m+n = 12(a+b) + 10, which leaves a remainder of 10. For II: m-n = 12(a-b) - 2. Adding and subtracting 12 gives 12(a-b-1) + 10, which also leaves a remainder of 10. Both statements are correct.
Related questions on Arithmetic
- What is the remainder when (17^{25} + 19^{25}) is divided by 18?
- A bottle contains spirit and water in the ratio 1:4 and another identical bottle contains spirit and water in the ratio 4:1. In what rat...
- Let P = 5^5 \times 15^{15} \times 25^{25} \times 35^{35} and Q = 10^{10} \times 20^{20} \times 30^{30} \times 40^{40}. What is the numbe...
- Two students X and Y appeared in a test. The score of X is 20 more than that of Y. If the score of X is 75% of the sum of the scores of X an...
- Question: The product of a natural number N and the number M written by the same digits of N in the reverse order is 252. What is the number...