Subject
বীমা কর্পোরেশন
Topic
সাধারণ বীমা কর্পোরেশন (সহকারী ব্যবস্থাপক)(IBA,DU) ০৮.১১.২০২৪
On dividing a number by 5, we get 3 as remainder. What will be the remainder when the square of the number is divided by 5?
On dividing a number by 5, we get 3 as remainder. What will be the remainder when the square of the number is divided by 5?
খ)
1গ)
2ঘ)
4ঙ)
NoneExplanation
মনেকরি, সংখ্যাটি = x এবং ভাগফল = p ∴ x = 5p + 3 এখন, (x)² = (5p + 3)² x² = (5p)² + 2.5p.3 + (3)² = 25p² + 30p + 9 = 25p² + 30p + 5 + 4 = 5(5p² + 6p + 1) + 4 ∴ নির্ণেয় ভাগশেষ = 4Related questions
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