which of the following is an irrational number

A.11
B.16
C.100
D.81

it has to be one of them its a multiple choice. and they have a sign above them the looks like a v with a line above it _

ahhh, so they are square roots

clearly √16, √100, and √81 are all whole numbers, thus rational
but √11 = appr 3.31662479...
never ends, never repeats , so IRRATIONAL (not rational, not a ratio, not a fraction)

thank you so much!!!! have a great day!

To determine which of the following numbers is an irrational number, we need to understand what an irrational number is. An irrational number is a number that cannot be expressed as a fraction or as a terminating or repeating decimal.

Let's examine each option:

A. 11: This is a whole number, and it can be expressed as a fraction (11/1) or as a terminating decimal (11.0).

B. 16: This is also a whole number and can be expressed as a fraction (16/1) or as a terminating decimal (16.0).

C. 100: Again, 100 is a whole number that can be expressed as a fraction (100/1) or as a terminating decimal (100.0).

D. 81: Similar to the previous options, 81 is a whole number that can be expressed as a fraction (81/1) or as a terminating decimal (81.0).

From the given options, none of them meet the criteria of being irrational numbers since they can all be expressed as fractions or terminating decimals. Therefore, none of the options provided (A, B, C, or D) is an irrational number.

It's important to note that irrational numbers include examples like √2, π (pi), and e (Euler's number), which cannot be expressed as fractions or terminating decimals.

none, they are all integers.

As a matter of fact they are all natural numbers