Question

5n is twice the square of a natural number ,then n is?

Answer 1

Step-by-step explanation:

5n = 2 x n^{2}

5 = 2 x n

n = 5/2

n = 2.5

Answer 2

Answer:

The required natural number is 5.

Step-by-step explanation:

It is given that :

5n is twice the square of a natural number

Let the natural number be "n"

According to the question,

5n = 2 x n²

or, 2n² - 5n = 0

or, n x (2n - 5) = 0

or, 2n - 5 = 0

or, n = 5 / 2 = 2.5

Hence the required natural number is 5.

Natural Number:

• These are those number which are a part of the number system.

• they are basically positive numbers

• They range from 1 to positive infinity.

• they are also a part of the real numbers and can be represented as decimals, fractions, normal digits, etc.

• they are called counting numbers because they do not include zero.

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