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Expression Formation

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Question

Question 96

Challenge

Write an expression for the sum of 1 and twice a number n, if you let n be any odd number, will the result always be an odd number?

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Solution

Let the number be n.
So, according to the statement, the expression can be written as = 2n + 1.
Yes, the result is always an odd number, because when a number becomes multiplied by 2, it becomes even and the addition of 1 in that even number makes it an odd number.

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Expression Formation

Standard VII Mathematics

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