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1. If \(x\) is congruent to \(13\) modulo \(17\) then \(7x - 3\) is congruent to which number modulo \(17\)?
The number is .
2. The duration of flight travel from Chennai to London through British Airlines is approximately \(11\) hours. The aeroplane begins its journey on Sunday at \(23:30\) hours. If the time in Chennai is four and a half hours ahead of London’s time, then find the time in London, when the flight will land at London Airport.
The flight lands at London Airport at
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