Find the error intervals for the following rounded numbers

Question 1:

1.854 (3 d.p.)

1.8535≤x<1.8545

Question 2:

48000 (2 s.f.)

47500≤x<48500

Question 3:

7000 (2 s.f.)

6950≤x<7050

Question 4:

5.742 (3 d.p.)

5.7415≤x<5.7425