Aptitude Counting And Probability Test Mcqs Online Preparation

1. A jar contains 20 marbles: 4 red, 6 white, and 10 blue. If you remove marbles one at a time, randomly, what is the minimum number that must be removed to be certain that you have at least 2 marbles of each colour ?

2. How many four-digit numbers have only even digits ?

3. A diner service a lunch special, consisting of soup or salad, a sandwich, coffee or tea, and a dessert. If the menu lists 3 soups, 2 salad, 7 sandwiches, and 8 desserts, how many different lunches can.You choose ? (Note. Two lunches are different if they differ in any aspect.)

4. There are 100 people on a line. Aviva is the 37th person and Naomi is the 67th person. If a person on line is chosen at random, what is the probability that the person is standing between Aviva and Naomi ?

5. Alyssa completed exercises 6 - 20 on her math review sheet in 30 minutes. At this rate, how long in minutes, will it take her to complete exercises 29 - 57 ?

6. A jar has 5 marbles, 1 of each of the colors red, white, blue, green, and yellow. If 4 marbles are removed from the jar, What is the probability that the yellow one was removed ?

7. Dwight Eisenhower was born Oct 14, 1890 and died on March 28, 1969. What was his age, in years, at the time of his death ?

8. Let A be the set of primes less than 6, and B be the set of positive odd number less then 6. How many different sums of the form a + b are possible, if a is in and b is in B ?

9. What is the sum of all the numbers less than 50 that are in the region labeled y ?