Grades 5-6 Video Solutions 2026-2026_5-6

Video Transcription

Video Summary

A 24-hour digital clock keeps correct time, but two of its digits are swapped. The clock currently shows 1569. What will the clock show one minute later? Okay, so we know that in a 24-hour clock, the minutes cannot be greater than 59. So for sure, the 6 in the minutes is in the wrong position. So we can try swapping the 6 with different positions. If we try swapping the 6 and the 1, then we would get 6519. Again, we know the hour cannot exceed 23. So something that cannot work. Let's try something else. Swapping the 6 and the 5, then we would get 1659, which could be a possible time. Our minute is less than 60 and our hours are less than 24. If we tried swapping the 6 and the 9, we would have 1596, which also doesn't work because our minutes cannot be greater than 59. So we know that our 6 and our 5 must have swapped places. So the correct time is 1659. An hour, sorry, a minute later, this would show 170. And then swapping the second and the third position back to show the swapped clock time, we would have 1070. So our final answer is A.

Keywords

24-hour clock

digit swap

time puzzle

minute later

clock time