An interesting GMAT problem solving practice question in permutation combination. The concept covered in this question is selecting one or more objects from a set of object, all of which are not distinct. The objects not being distinct is what makes this question an interesting one. This is another question that you can use as a template to solve questions that comprise … [Read more...] about Permutation Combination : Selecting from non distinct object
GMAT Problem Solving
Counting Methods : GMAT Problem Solving
This GMAT permutation combination practice question is a classic counting methods question focusing on numbers and number properties. You can use the explanation given in this question as a template to solve questions of this kind. After cracking the question, create your own variants of this question and try solving them to master this idea. Question How many odd 4 digit … [Read more...] about Counting Methods : GMAT Problem Solving
GMAT PS : Percents, Ratio
QuestionOf the new vehicles registered in a week, 300 were neither SUVs nor were they powered by diesel. 3/4th of the SUVs registered were diesel powered and there were half as many SUVs as there were non SUVs. If SUVs not powered by diesel were a sixth of non SUVs not powered by diesel, how many vehicles registered in the week were powered by diesel?A. 200B. 50C. 250D. 150E. … [Read more...] about GMAT PS : Percents, Ratio
GMAT Problem Solving : Rates – Work Time
QuestionPercy can mow 1/a of a lawn in half an hour. Mona and Percy working together at their respective rates can mow the entire lawn in a couple of hours. How many minutes will Mona take to mow the lawn? 40Correct Answer : Choice A.Explanatory AnswerPercy can mow 1/a of the lawn in 30 minutesSo, Percy can mow the lawn completely in 30a minutes.Therefore, in 1 minute, … [Read more...] about GMAT Problem Solving : Rates – Work Time
Statistics – Range – Problem Solving
10 distinct integers are arranged in ascending order. The range of the first 7 is 25 and that of last 7 is 30. What is the maximum range of the 10 numbers?A. 30B. 25C. 55D. 27E. 52Correct Answer is Choice E. 52. Explanatory AnswerLet the smallest of the 10 numbers be X1 and the largest be X10. The range for the 10 numbers is maximized when the smallest number is X1 is … [Read more...] about Statistics – Range – Problem Solving