How many seconds does the second hand take from the number 2 to the number 6?

It takes 20 seconds for the second hand to turn from the number 2 to the number 6.

Calculation process: (6-2)×5=4×5=20 seconds.

So the elapsed time is 20 seconds.

For example, the second hand takes 5×3= 15 seconds from the number 6 to the number 9.