1.

A clock strikes once at 1 o'clock, twice at 2 o'clock and thrice at 3 o'clock, and so on. If it takes 12 seconds to strike at 5 o'clock, what is the time taken by it to strike at 10 o'clock? (a) 20 seconds (b) 24 seconds (c) 28 seconds (d) 30 seconds

Answer»

Correct option (b) 24 seconds

Explanation:

At 5 o’clock the clock will strike 5 times. It’s given that it takes 12 seconds to do so. Now, at 10 o’clock the clock will strike 10 times. Hence, the time taken by it to strike = 12 × 2 = 24 seconds



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