Tuesday, September 8, 2009

Solve it - Question 5

Dear All

Try this question:

The time on electronic digital watch is 11 : 11. How many minutes before this would the watch have shown a time with all digits identical?

Here is the Solution:

The required digits on the clock before 11:11 would be 5:55 (Note that times like 6.66, 7.77 are not possible).
This gives a time difference of 316 minutes (11 : 11 – 5.55).

5 comments:

  1. Is it 671 minutes before that the watch must have shown 00:00
    I hope I'm correct !

    ReplyDelete
  2. sorry.. but this is not the correct answer... try again.

    ReplyDelete
  3. Den i thnk it can b 529 min since its a digital wach and hence it'll also show 22:22
    But 1 thing iz dat 22:22 hours'll b after 11:11 $ d tym wen it'll hav ol d digits identical will only be 00:00
    oly dez 3 posibilityes r der 4 identical digits- 00:00, 11:11, 22:22
    i thnk dis tym i'm correct.... :) !

    ReplyDelete
  4. well done, rachita.. it is 316 min.

    ReplyDelete

NUMBER OF TRAILING ZEROES IN A PRODUCT (PART -2)

Dear all, Please do watch my latest video (dated 10-01-2021) on the topic “NUMBER OF TRAILING ZEROES IN A PRODUCT (PART -2)” VIDEO LINK HERE...