3. (5 points) A natural number divided by 3 gives a remainder of 2. Using the quotient obtained, divide it by 4, and get a remainder of 3. If this natural number is divided by 6, the remainder is $\qquad$ .
【Solution】Solution: Let the quotient obtained when dividing by 4 with a remainder of 3 be $x$, then this quotient is $4 x+3$, and this natural number is: $(4 x+3) \times 3+2=12 x+11=6 \times(2 x+1)+5$, so if this natural number is divided by 6, the remainder is 5. Therefore, the answer is: 5.