Question 13 of 29beginner🔧 ApplyShort Answer1 mark

Write 5 numbers such that you can determine by looking at their units digit that they are not squares.

Correct Answer

Rule: Perfect squares can only end with digits 0, 1, 4, 5, 6, or 9. Numbers ending with 2, 3, 7, or 8 cannot be perfect squares.

Answer: Five numbers that are definitely not squares based on their units digit: 12, 23, 37, 48, 52

Exercise: Patterns and Properties of Perfect Squares | Q: 1 | (Page Page 4)
For More Understanding

Explanation

The chapter states that perfect squares can only end with digits 0, 1, 4, 5, 6, or 9. Therefore, numbers ending with 2, 3, 7, or 8 are definitely not perfect squares, regardless of their other digits.

Solution Steps

  1. Step 1: Recall that perfect squares end only with 0, 1, 4, 5, 6, or 9

  2. Step 2: Numbers ending with 2, 3, 7, or 8 cannot be perfect squares

  3. Step 3: Choose any 5 numbers ending with these digits: 12, 23, 37, 48, 52

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