We know what the graph of 2^x looks like: It shows that when x is positive, with increasing value

### Solving probability problems

The reason that probability can encompass other categories so easily is that the probability of an event occurring is, at heart, a simple ratio: the number of desired outcomes/the number

### Understanding sampling to crack CAT

People with a statistics background will be very comfortable with it, but if you have not studied statistics, a little bit of knowledge will be helpful. You are not required to know

### Solving a question from back

When a question offers multiple bits of information, starting with the last piece can often be a way of dramatically simplifying the problem. Take the following problem: Mary’s income is

### How to manipulate standard formulas

We know the formula we need to use to find the sum of n consecutive positive integers starting from 1. The formula is given as n(n+1)/2. So the sum of

### Importance of catching details

In our everyday lives, we all understand that attention to linguistic detail is important. Similarly, if you were on the phone making plans with a friend, you’d never hang up

### Formulas to solve 3 overlapping sets in venn diagram

There are two basic formulas that we already know: 1) Total = n(No Set) + n(Exactly one set) + n(Exactly two sets) + n(Exactly three sets) 2) Total = n(A)

### Percent Problems

Pop quiz: 1) Your restaurant bill came to exactly Rs.64.00 and you want to leave a 20% tip. How much do you leave? 2) You’re running a charity half-marathon and

### How to make rate work problems easier

Example 1: If 10 workers complete a work in 5 days working 8 hours a day, how much work will be done by 6 workers in 10 days working 2

### Blending Strategies to solve quants

Try the following question: For a certain art exhibit, a museum sold admission tickets to a group of 30 people every 5 minutes from 9:00 in the morning to 5:55