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

### Importance of reading in CR

There are lots of strategies and techniques discussed in books, in class and on blogs. But one thing that we seriously encourage our students to do (that they need to