Let the distance be x km. Speed upstream = 10 – 4 = 6 km/hr Speed downstream = 10 + 4 = 14 km/hr ⇒ x/6 + x/14 = 1 ⇒ (7x + 3x)/42 = 1 ⇒ 10x = 42 ⇒ x = 42/10 = 4.2 km
In a certain coded language 'CAT' is coded as '24267' and 'DOG' is coded as '231220', then what is the code of ' COW '?
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The code ‘K26@’ is the code word for
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