The first terms of a sequence are shown below.
2 , 5 , 10, . . .
Which formula gives the n-th term of this sequence for all positive integers n?
Anna has an average of 70 on 4 different tests.
If the lowest score is dropped, her average rises to 90.
What is her lowest score?
A box with 100 matches weighs 50 grams.
The same box with 50 matches weighs 36 grams.
Find the weight of the box.
The picture shows four consecutive operations.
Note that the ratio symbol : is effectively used as a division operation.
A company organized a big dinner.
Every two employees shared a bowl of cherries, every three employees shared a bowl of apricots, and every four employees shared a bowl of red currants.
There were 65 bowls used in total.
How many employees were at the dinner?
X is a whole number.
X + 7 is greater than 33 and
X – 7 is less than 22.
Find all the numbers that X could be.
Each boy danced with exactly four girls and each girl danced with exactly five boys at a party.
If forty-five students attended the party, how many boys were there?
Multimedia Messaging Service, or MMS, is a standard way to send messages that contain multimedia content to and from mobile phones.
Every student in a seventh grade class sends an MMS to each of the other students in the class.
There are 240 messages.
How many students are in the class?
Which shape is closer to point (3, 0)?
Here 3 is the distance from the origin to the point along the x-axis and 0 is the distance along the y-axis.
A captain sees an iceberg with a height of 80 meters above the water line.
Only one-sixth (1/6) of the iceberg is visible above the water line.
What is the total height, in meters, of the iceberg?
The total fare for 3 adults and 4 children on the Funny Car trip is $35.00.
If a child's fare is half of an adult's fare, what is the adult fare?
The picture shows a roadmap with the distance between cities in miles.
If I drive at 55 miles per hour, how much time does it take to go from A to F?
Eleven families each brought the same number of chairs to a party.
Two more chairs are needed to seat all 35 of the participants.
How many chairs did each family bring?
The red and green shapes are two pieces that form the blue shape.
The volume of the green block is four times the volume of the red block.
What is the volume of the green block?
Gerry drove a total of 360 miles in 6 hours.
How many miles did he drive in the first hour if he accelerated each hour, covering an extra 2 miles compared to the previous hour?
A Spanish village includes 34 streets and 680 households.
Guess the number of men and boys living on a street if the average family size is 4 people.
The picture shows the village of Valldemossa, Illes Balears, Spain.
The chest with golden coins weighs 200kg.
Once the pirates pay exactly a half of the money to the government for taxes, the chest weighs 120kg.
How much does the empty chest weigh?
At the bank, Gerry exchanged a $10 bill for an equal number of nickels, dimes, and quarters.
How many of each type of coin did Gerry receive?
Nickel = 5 cents.
Dime = 10 cents.
Quarter = 25 cents.
Jane has $5.40 in dimes and quarters. She has twice as many dime coins as quarters.
How many coins does she have?
A quarter dollar, or quarter, is a U.S. coin worth 25 cents, and a dime is a ten-cent coin.
If Jane adds two to eleven times her favorite number, she gets one hundred and one.
What is her favorite number?
52 means '5 squared', or 5 x 5.
53 means '5 cubed', or 5 x 5 x 5
What is three squared times two cubed?
The Smiths found a piggy bank with $88 cash. They decided to share the money so that each person receives 4 times more than an animal.
How much money does Mr. Smith receive?
Three strips of paneling 40 cm long are arranged to form a square.
If the central strip is double the width of the end strip, what is its width?
Three farmers take bags one after another.
The second farmer takes one bag more than the first farmer and the third takes one bag more than the second farmer.
No bags are left near the barn.
How many bags did the first farmer take?
Leslie Green asks:
A particular function takes a value X, adds 16 to it, then takes the square root of the result.
Can you simplify this function?
Jane and Gerry spent a combined total of 150 hours chatting over the web in December last year.
If Jane spent 30 more hours than Gerry did, how many hours did she spend on the so important activity?
This is typical SAT question.
Jane has twice as many cousins as David.
Gerry has 3 cousins, which is 5 fewer than Jane has.
How many cousins does David have?