Question

While booking a bus ticket, Arpan tells Sita the hour of his bus departure and he tells Gita at which minute it leaves.
Sita & Gita know that the following services are available on that day: 06:32, 06:43, 06:50, 07:17, 07:46, 08:19, 08:32, 09:17, 09:19, 09:50 (all in the morning).
Site says "I don't know the exact bus timings, but I am sure that neither does Gita".
Gita replies "I didn't know the exact bus time before, but now I do". Sita responds "If Gita knows it now, then I also know!".
When is Arpan's bus leaving? Please state the answer and your reasoning for the answer.

Answer 1

Isme 2 hi time hai jiske minutes unique hai, 6:43 and 7:46. Jb sita bolti hai ki mujhe ni pta but gita ko bhi ni pta. Iska mtlb ye hai ki jo hour hai usme koi unique numbers ni hai. To 6 ya 7 dono ho ni skta. Bache hai 8 or 9.

Jb gita bolti hai ki pehle ni pta tha but ab pta hai iska mtlb ye hai ki 8:19, 8:32, 9:17, 9:19, 9:50. Ab isme agar use pta hai ki minutes kn sa hai to repeat ho rhe mintues wo time hat jaenge. To bache 8:32, 9:17, 9:50.

Fir sita ne bola ki agar gita ko pta hai to mujhe bhi pta hai. because sita ko hour pta hai it's 8:32. Ni to 9:17 ya 9:50 me confusion hota use.

Answer 2

Given :  Bus timing  , Arpan tell hour to Sita and minute to gita  

To find : When is Arpan's bus leaving

Solution:

Hours        Minutes

6                           32            43                50

7          17                                        46

8                 19      32                                  

9         17     19                                            50

Site says "I don't know the exact bus timings, but I am sure that neither does Gita".

Ofcourse sit does not know bus timing as Sita knows hr only and each hr has more than one minute

But Sita is sure Gita Does not know the time this mean hpur known to Sita

Does not have unique time like 6 : 43   or 7 : 46  where only  minutes are sufficient to know bus timing

hence hours can not be 6 or 7

so we are left with 8 & 9 hour only

Gita Did not knew this thing before but now gita knows that bus timing is 8 or 9 hour

it can not be  8: 19 or 9 : 19 as then Gita would not have know exactly

so we are left with timings 8 : 32 , 9 : 17  & 9 : 50

Sita now also know timing this mean hour known to her can not be 9 as then she would not have known

Hence Arpan Bus Leaves at  8:32

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