A father said to his son, "I was as old as you are at the present at the time of your birth". If the father's age is 45 years now, what was the son's age three and half years years back?
Let the sons current age be x
So fathers age x years back when son was born => 45-x = x
Solving we get x = 22.5
3.5 Years back son's age = 22.5-3.5 = 19 years
The tremors of earthquake are felt at interval of 25 seconds.The first tremor was felt at 02:54:57 and the last tremor was felt at 10:45:22 am. How many times were the tremors felt?
The time duration of earthquake = Duration Between first and last tremor = 10:45:22 - 02:54:57
For ease of calculation, let's assume that first tremor was at 02:45:22
Number of hours between 02:45:22 and 10:45:22 = 8 Hours = 8 * 60 *60 seconds = 28800 seconds
But in reality, its less than 8 hours as tremors started at 02:54:57 instead of 02:45:22
So time duration between 02:54:57 and 02:45:22 = 9 minutes 35 seconds = 575 seconds
The total duration of the earthquake in seconds = 28800 - 575 = 28225
The tremor was felt every 25 seconds so the number of times tremor was felt in 28225 seconds = 28225/25 = 1129
Following is one of the quotes by Mahatama Gandhi:
"Strength does not come
from physical capacity.
It comes from an indomitable will."
An alphanumeric character is randomy picked from this quote, what is the probability that it would contain one of the following letters: G or A or N or D or H or I?
Note: Alphanumeric character means alphabet or number. Space and other characters should be ignored.