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## Question

If m is the tens digit of the sum of the two-digit positive integers kr and ms, where k,m, r and s are digits of the integers, which of the following must be true?

## Solution : If m is the tens digit of the sum of the two-digit …

Watch the video solution to see “owning the dataset” approach come to life on this question.

## Question Attributes

• Source: Official Mock
• Difficulty Level: Hard – 43% accuracy
• Question Type: Number Properties

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## Summary – If m is the tens digit of the sum of the two-digit . . .

To master Number Properties questions, adhere to the following steps:

1. Thoroughly understand the given information by actively translating and drawing correct approaches and strategies.
2. Simplify and do mathematical processing as required.

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