When a natural number n is divided by 5 the remainder is 4. What is the remainder when 2n is divided by 5?A. 2 B. 3 C. 4 D. 0

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When a natural number n is divided by 5 the remainder is 4. What is the remainder when 2n is divided by 5?

A. 2

B. 3

C. 4

D. 0

AA

BD

CB

DC

Answer:

C. B

Read Explanation:

Let, the quotient = x ∴ n = 5x + 4 ⇒ 2n = 10x + 8 = 10x + 5 + 3 = 5(2x + 1) + 3 ∴ When 2n is divided by 5, remainder = 3

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2 കൊണ്ടു ഹരിച്ചാൽ ശിഷ്ടം 1 ഉം 3 കൊണ്ടു ഹരിച്ചാൽ ശിഷ്ടം 2 ഉം 4 കൊണ്ടു ഹരിച്ചാൽ ശിഷ്ടം 3 ഉം 5 കൊണ്ടു ഹരിച്ചാൽ ശിഷ്ടം 4 ഉം കിട്ടുന്ന ഏറ്റവും ചെറിയ സംഖ്യ ഏത്