Question

A clock strikes once at 1 o clock,twice at 2 o clock,thrice at 3 o clock and so on. How many times will it strikes in 24 hours
PLEASE GIVE STEP BY STEP EXPLANATION . AND NOT HARD DO IN EASY WAY
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Answer 1

$answer$

There are 12 hours in the morning (1am, 2am, …, 12am) and 12 hours in the afternoon (1pm, 2pm, …, 12pm).

The formula for the sum of numbers from 1 to n is (n^2+n)/2.

(12^2+12)/2 = 78. The clock strikes 78 times in the morning.

The clock also strikes 78 times in the afternoon.

Total 156.