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A9543B represents a six-digit number in which A and B are digits different from each other. The number is divisible by 11 and also by 8. What digit does A represent?

Dec 16, 2017 23:11:45 UTC

The tower shown has no gaps. Suppose it is painted red on all exterior sides including the bottom, and then cut into cubes along the indicated lines. How many cubes will each have red paint on just three faces? Dec 16, 2017 23:10:38 UTC

The “staircase” shown is 4 units tall and contains 10 unit squares. Suppose the staircase were extended until it was 12 units tall. How many unit squares would it then contain all together? Dec 16, 2017 22:33:29 UTC

Triangle ABC has its vertices A, B, C on the sides of a rectangle 4 units by 5 units as shown. What is the area of the triangle ABC in square units? Dec 17, 2017 03:18:06 UTC
When a certain number N is divided by 3, the result is the same as when N is decreased by 8. What is the number N?
Nov 30, 2017 08:22:48 UTC

Using the letters A and B, the following two-letter code words can be formed: AA, AB, BB, BA. Using the letters A, B, and C, how many different three-letter code words can be formed?

Dec 17, 2017 03:13:47 UTC
If I start with the number 7 and count by 4s, the following sequence is obtained: 7, 11, 15, 19, 23, and so forth. A new sequence is formed when I start with a different number and count by a different number. Suppose the 2nd number of the new sequence is 8 and the 5th number is 17. What is the 10th number of the new sequence?
Nov 30, 2017 08:34:44 UTC

In a stationery store, pencils have one price and pens have another price. Two pencils and three pens cost 78¢. But three pencils and two pens cost 72¢. How much does one pencil cost?

Dec 17, 2017 02:33:44 UTC
In hoopball, a field goal is worth 2 points and a foul shot is worth 1 point. Suppose a team scored 72 points and made 6 more field goals than foul shots. How many foul shots did the team make?
Dec 10, 2017 22:53:19 UTC
$1^2$ means 1 x 1, $2^2$ means 2 x 2, $3^2$ means 3 x 3, and so forth. $1^2 + 2^2 + 3^2 + 4^2 + ... + 25^2 = 5525$, and $2^2 + 4^2 + 6^2 + 8^2 + ... + 50^2 = N$. Find the value of N.
Dec 10, 2017 23:00:47 UTC