Question

Four subjects, physics, chemistry, mathematics and biology were taught in four consecutive periods of one hour each starting from 8.00
a.m. at what time was the chemistry period scheduled? (i) mathematics period ended at 10.00 am which was preceded by biology. (ii) physics was scheduled in the last period. (iii) mathematics period was immediately followed by chemistry.

Answer 1

CHEMISTRY PERIOD STARTED FROM 8:00AM 
FOLLOWED BY MATHS AT 9:00AM
AND BIOLOGY AT 10:00 AM
AND PHYSICS AT 11:00 AM