Question

rational number are indicated by the letter?
1. R
2. Q
3. Q'
4. w​

Answer 1

Answer:

4 is the answer mark me brain liest

Answer 2

Answer:

2. Q

Step-by-step explanation:

The letter Q designates the set of rational numbers.

So more info for future:

Natural Numbers:  N .

• “N” for natural.

Integers:  Z  

• That’s for the German word Zahlen, or “number”.

Rational Numbers:  

• Q , for the Italian quoziente.

Real Numbers:  R ,

• for “Real”.

Complex Numbers:  C ,

• for “complex”.