Find the error intervals for the following truncated numbers

Question 1:

0.6 (1 d.p.)
0.6≤x<0.7

Question 2:

240 (2 s.f.)
240≤x<250

Question 3:

2.348 (3 d.p.)
2.348≤x<2.349

Question 4:

7900 (2 s.f.)
7900≤x<8000