Question

If a clock strikes once at one o'clock twice a two o'clock an so on and again once at one o'clock an so on then how many times will be struck the course of 2 days

Answer 1

Step-by-step explanation:

GIVEN :

The clock strikes once at 1 o'clock,twice at 2 o'clock and so on.

[1 day = 24 hours] clock has 12 hours so we have to multiply the series by 2 to make it 24 hours.

2 [1 + 2 + 3 + ............ + 12]

Sn=n /2 [ a + L ]

Here, a = 1, n = 12, L = 12

S12 = 2 x (n/2) [a+L]

S12= 2 x (12/2) [1+12]

S12 = 12 × 13

S12 = 156

Answer 2

Answer:

312 hain ans

it was stuck for 2 days