TCS Company Programming Variables

Why reference is not same as a pointer?
A)Reference does not need an explicit dereferencing mechanism B)A reference can never be null C) A reference once established cannot be changed D)All of the above

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D)All of the above
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D)All of the above
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D)All of the above
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TCS Other Question

The marked price of a shirt and trousers are in the ratio 1:2. The shopkeeper gives 40% discount on the shirt. If the total discount in the set of the shirt and trousers is 30%, the discount offered on the trouser is:
A)25% B)20% C)30% D)15% Rakesh and Saket run a race of 2 km. First Rakesh gives Saket a start of 200 meters and beats him by 1 minute. If Rakesh gives Saket a start of 6 minutes Rakesh is beaten by 1 km. Find the time in minutes in which Rakesh and Saket can run the races separately.
A)11, 18 B)12, 18 C)8, 10 D)10, 12