Advertisements
Advertisements
Question
Today is Tuesday. My uncle will come after 45 days. In which day my uncle will be coming?
Advertisements
Solution
No. of days in a week = 7 days.
45 ≡ x (mod 7)
45 – x = 7n
45 – x is a multiple of 7.
∴ Value of x must be 3.
∴ Three days after Tuesday is Friday. Uncle will come on Friday.
APPEARS IN
RELATED QUESTIONS
Find the least positive value of x such that 71 ≡ x (mod 8)
Find the least positive value of x such that 78 + x ≡ 3 (mod 5)
Find the least positive value of x such that 5x ≡ 4 (mod 6)
If x is congruent to 13 modulo 17 then 7x – 3 is congruent to which number modulo 17?
Solve 5x ≡ 4 (mod 6)
What is the time 100 hours after 7 a.m.?
What is time 15 hours before 11 p.m.?
Prove that 2n + 6 × 9n is always divisible by 7 for any positive integer n
Find the remainder when 281 is divided by 17.
The duration of flight travel from Chennai to London through British Airlines is approximately 11 hours. The airplane begin its journey on Sunday at 23:30 hours. If the time at Chennai is four and half hours ahead to that of London’s time, then find the time at London, when will the flight land at London Airport?
