1. In his pocket, a man has five coins, of which two are double headed (both sides are heads), one is double tailed (both sides are tails) and two are fair (normal) coins. (a) Man shuts his eyes, chooses a coin at random and tosses it. What is the probability that the lower face of the coin is heads? (b) He opens his eyes and sees that the upper face of the coin is heads. What is the probability that the lower face is also heads.
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
