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If a number is of the form (4q+1), what is the remainder when its square is divided by 8?

Answer and explanation

Correct answer: 1

Step 1: A number of the form (4q+1) is odd. Step 2: The square of an odd number leaves remainder 1 when divided by 8; for example, (1^2) and (5^2) both leave remainder 1. Step 3: Remember the rule that odd squares leave remainder 1 on division by 8.

Related tags

Euclids-Division-LemmaOdd-SquareRemainder-8Euclid’s Division LemmaEuclid S Division LemmaReal NumbersMathematicsClass 10 Mcq

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