Question

Which one is rational number A)0.12345 B)√23 C)√36 D)2√3​

Answer 1

Explanation:

A rational number is a number that can be expressed as a ratio or fraction of two integers, where the denominator is not zero. Let's evaluate each option:

A) 0.12345: This is a decimal, but it can be expressed as 12345/100000, which is a ratio of two integers. Therefore, it is a rational number.

B) √23: This is an irrational number because it cannot be expressed as a simple fraction. It's a non-repeating, non-terminating decimal.

C) √36: The square root of 36 is 6, which is a whole number. Whole numbers can be expressed as ratios of integers (e.g., 6/1), so it is a rational number.

D) 2√3: This is also an irrational number because it cannot be expressed as a simple fraction.

So, the rational numbers among the options are A) 0.12345 and C) √36.