Explanations:To determine the amount of time it took for Tejas to travel from Delhi to Shimla, we need to calculate the time difference between 6 pm and 3 am the next day. This involves understanding the 24-hour clock and the transition from one day to the next.
First, let's break down the time difference. From 6 pm to midnight (12 am) is 6 hours. From midnight (12 am) to 3 am is another 3 hours. Adding these two intervals together, we get:
\[ 6 \text{ hours} + 3 \text{ hours} = 9 \text{ hours} \]
Thus, the total travel time from Delhi to Shimla is 9 hours.
Next, we need to classify the number 9 in terms of number types. The number 9 is a natural number, which is a positive integer starting from 1. It is also a whole number, which includes all natural numbers and zero. Since 9 is an integer, it is also a rational number (a number that can be expressed as a ratio of two integers) and a real number (which includes all rational and irrational numbers).
Therefore, the number 9 is classified as a natural number, whole number, integer, rational number, and real number.
By understanding the time calculation and the classification of numbers, we can conclude that the correct answer is 9 hours, and it is a natural, whole, integer, rational, and real number.