Question

20.
(a) 5 October
(b) 5 Septemb
How many times will the clock buzz in a day if it buzzes 1 time at 1hrs, 2 times at 2hrs and so on?
(a) 78
(b) 150
(c) 200
(d) 300​

Answer 1

Answer:

d) 300

Step-by-step explanation:

1 time at one hour

2 times at two hours

3 times at three hours

4 times at four hours

5 times at five hours and so on...

so, 1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24 = 300

Hope it helps! <3