Find the L.C.M of $12, 28$.

Find the L.C.M of $16, 24$.

Find the L.C.M of $8, 14$.

Find the L.C.M of $30, 20$.

Ramya visits the gym five days once and Kavita visit the gym six days once. In which day will they meet each other$?$

Arun and Shahjahan goes for walking in a circular path of a park in the same direction. Arun takes $6 \mathrm{minutes}$ to complete one round, while Shahjahan takes $8 \mathrm{minutes}$ to complete one round. In how many minutes will they meet each other $?$