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48 = 2 × 3 × 8 So, 102a32 is divisible by both 3 and 8 Since 102a32 is divisible by 3, so sum of the digits must be divisible by 3 So, (1 + 0 + 2 + x + 3 + 2) = (a + 8) must be divisible by 3 So, (a + 8) = 9 or 12 or 15 So, a = 1 or 4 or 7 For 102a32 to be divisible by 8, a32 must be divisible by 8 So, a = 2 or 4 or 6 or 8 Since the number is divisible by both 3 and 8, So a = 4
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Time is taken by two trains running in opposite directions to cross a man standing on the platform in 36 seconds and 21 seconds respectively. It took 27...
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Train P travelling at 66 km/hr crosses another train Q, having three fourth of its length and travelling in opposite direction at 42 km/hr in 28 seconds...
A person sees a train passing over 6 km long bridge. The length of the train is half that of bridge if the train clears the bridge in 5 mins. What is th...
A train can cross a pole in 18 seconds. While if the train increased its speed by 75% then time taken by it to cross 444 metres long platform is 42 seco...
