CBSE · Class 8 · Mathematics · Square and Square RootsWhich of the following digits can NEVER be at the unit's place of a perfect square number?
Step-by-Step Solution
A perfect square number always ends in $0, 1, 4, 5, 6,$ or $9$. \nIt NEVER ends in 2, 3, 7, or 8.\nTherefore, 7 cannot be at the unit's place of a perfect square.
Detailed Options Breakdown
Option : 1
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Square and Square Roots.
Option 1: 5
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Square and Square Roots.
Option 2: 7 (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 3: 9
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Square and Square Roots.
💡 Study Guide: This question tests core syllabus concepts from Square and Square Roots. For formulas, key summaries, and mock exam reference guides, read the full Square and Square Roots Revision Notes.