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GMAT Quantitative General

Subjects : gmat, math
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The average of 5 numbers is 2. After one number is deleted - the new average is -3. What number was deleted?






2. Number of integers from A to B inclusive = B - A + 1 - How many consecutive integers are there from 73 through 419 - inclusive?






3. The number of ways independent events can occur together.






4. gcd(m,n)






5. The number of outcomes that result in A divided by the total number of possible outcomes.






6. How to check whether a number is a multiple of 3.






7. Average Rate: Average speed






8. 2nd Rule of Probability: P(E) = 1 - P(not E)






9. Sum of consecutive numbers






10. 2n+1 - 2n+3 - 2n+5






11. 4th rule of Probability






12. The average of consecutive numbers






13. gcd(m,n)*lcm(m,n)






14. To determine multiple-event probability where each individual event must occur in a certain way.






15. Sq. rt(2)






16. Set Problems formula






17. Volume of a sphere






18. 3rd Rule of Probability: Conditional Probability






19. Simple probability






20. Simple Interest formula (remember this is only the interest earned - not the total amount of money present in the bank after interest earned)






21. How many liters of a solution that is 10% alcohol by volume must be added to 2 liters of a solution that is 50% alcohol by volume to create a solution that is 15% alcohol by volume?






22. 1. A and B < A or B 2. A or B > Individual probabilities of A - B 3. P(A and B) = P(A) x P(B) <-- 'fewer options' 4. P(A or B) = P(A) + P(B) <-- 'more options' - Probability of multiple events rules.






23. Some GMAT word problems involve groups with distinct 'either/or' categories (male/female - blue collar/white collar - etc.) The key is to do what with the information? 1. Find total number of possible outcomes. 2. Find the number of desired outcomes.






24. Since Mieko's average speed was 3/4 of Chan's - her time was 4/3 as long.






25. What to do with equations that have fractions






26. Combined Events: Not E = P(not E) = ?






27. Combined Events: E and F






28. Gross Profit formula






29. Dependent events: When are two events said to be dependent events?






30. 2n - 2n+2 - 2n+4






31. Multiples of 3






32. If $10 -000 is invested at 10% annual interest - compounded semi-annually - what is the balance after 1 year?






33. 0! = ?






34. Formula for area of a Trapezoid






35. Always try to factor






36. How to check whether a number is a multiple of 6






37. Indistinguishable events how to find the number of permutations






38. When you see an equation in factored form in a question?






39. Price purchased for by wholesaler






40. How many liters of a solution that is 15% salt must be added to 5 liters of a solution that is 8% salt so that the resulting mixture is 10% salt?






41. Average Rate: Average A per B






42. Odd and Even rule.






43. In general - difficult questions require how many steps to solve?






44. Probability and Geometry.






45. 1/8 = what %






46. Triangle abc with d on the outside with a line. What does d = ?






47. Formula for Mixed Group problems (involving Both/Neither)






48. Properties of 0






49. Inscribed Angle - Minor Arc






50. How to find all divisors of a number