A clock strikes once at 1 o’clock, twice at 2 o’clock and thrice 3 o’clock, and so on

A clock strikes once at 1 o’clock, twice at 2 o’clock and thrice 3 o’clock, and so on. If it takes 8 seconds to strike at 5 o’clock, the time taken by it to strike at 10 o’clock is
(a) 14 seconds
(b) 16 seconds
(c) 18 seconds
(d) None of the above

Anurag Mishra Professor Asked on 19th February 2016 in Maths.
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    Answer: (d) None of the above

    Anurag Mishra Professor Answered on 19th February 2016.
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