math

very easy

100

1+1

2

200

1+2

3

300

2+2

4

400

3+3

6

500

4+4

8

easy

100

How many hours is it until 6 p.m. if it is 12 p.m.?

6

200

"Which number has the same number of letters in its spelling as its meaning

Four

300

10 – 5

5

400

10 / 2

5

500

5 x 2

10

medium

100

If 1=3

2=3

3=5

4=4

5=4

Then, 6=?

3

200

This tricky math problem went viral a few years back after it appeared on an entrance exam in Hong Kong… for six-year-olds. Supposedly the students had just 20 seconds to solve the problem!

87

300

There are 49 dogs signed up for a dog show. There are 36 more small dogs than large dogs. How many small dogs have signed up to compete? 

42.5

400

I am an odd number. Take away one letter and I become even. What number am I?

Seven (take away the ‘s’ and it becomes ‘even’).

500

Using only an addition, how do you add eight 8’s and get the number 1000?

888 + 88 + 8 + 8 + 8 = 1000

hard

100

do odd perfect numbers exist

IDK

200

The cost of petrol rises by 2 cents a liter. last week a man bought 20 liters at the old price. This week he bought 10 liters at the new price. Altogether, the petrol costs $9.20. What was the old price for 1 liter?

.30

300

Teachers divided students into groups of 3. Each group of 3 wrote a report that had 9 pictures in it. The students used 585 pictures altogether. How many students were there in all?

195

400

Ten years ago the ratio between the ages of Mohan and Suman was 3:5. 11 years hence it will be 11:16. What is the present age of Mohan?

55

500

One ounce of solution X contains only ingredients a and b in a ratio of 2:3. One ounce of solution Y contains only ingredients a and b in a ratio of 1:2. If solution Z is created by mixing solutions X and Y in a ratio of 3:11, then 2520 ounces of solution Z contains how many ounces of a?

2520 of Z and 876 of a

very hard

100

The equation above shows how temperature F, measured in degrees Fahrenheit, relates to a temperature C, measured in degrees Celsius. Based on the equation, which of the following must be true?

1. A temperature increase of 1 degree Fahrenheit is equivalent to a temperature increase of 59 degree Celsius.
2. A temperature increase of 1 degree Celsius is equivalent to a temperature increase of 1.8 degrees Fahrenheit.
3. A temperature increase of 59 degree Fahrenheit is equivalent to a temperature increase of 1 degree Celsius.

I and II only

200

The equation 24x2+25x−47ax−2=−8x−3−53ax−2 is true for all values of x≠2a, where a is a constant.

What is the value of a?

-3

300

If 3x−y=12, what is the value of 8x2y?

2¹²

400

Points A and B lie on a circle with radius 1, and arc AB⌢ has a length of π3. What fraction of the circumference of the circle is the length of arc AB⌢?

1/6, 0.166, or 0.167.

500

In triangle ABC, the measure of ∠B is 90°, BC=16, and AC=20. Triangle DEF is similar to triangle ABC, where vertices D, E, and F correspond to vertices A, B, and C, respectively, and each side of triangle DEF is 13 the length of the corresponding side of triangle ABC. What is the value of sinF?

3/5 or 0.6.