Riddles
Intellectually challenging 1
Riddle 2
Intellectually Challenging 2
100

What has a head, a tail but has not body or legs?

A penny

100

If a movie starts at 4:15 PM and lasts for 1 hour and 45 minutes, what time does it end?
 4:15 + 1 hour = 5:15. 5:15 + 45 minutes = 6:00 PM.

6:00 PM.

100

What has words but never speaks?

book

100

At 3:00 on a clock, what is the angle between the hour and minute hands?

right angle or 90 degree angle

200

What has hands but can't clap?

A clock

200

What are the next two numbers in this pattern?
5, 10, 20, 40, ___, ___

80, 160.

200

What belongs to you but other people use it more?

Your name

200

Two numbers have a product of 48 and a sum of 14. What are the two numbers?

6 and 8.

300

What gets wet while drying?

A towel

300

I am a three-digit number. My tens digit is 4 more than my ones digit. My hundreds digit is 3 less than my tens digit. If my ones digit is 2, what number am I?

The number is 362.

300

What has a thumb and four fingers but is not alive?

A glove

300

The sum of the ages of two brothers is 17. The older brother is 3 years older than the younger. How old is each?

Ages: 7 and 10.

400

What has to be broken before you can use it?

Egg

400

If ⅓ of a number is 9, what is ⅔ of that number?

18.

400

What gets bigger the more you take away from it?

a hole

400

Fill in +, –, ×, or ÷ to make this true:
8 _ 2 _ 4 = 10

8 – 2 + 4 = 10.

500

I have keys but no locks. I have space but no room. You can enter but can’t go outside. What am I?

A Keyboard

500

A square has the same perimeter as a rectangle with length 10 cm and width 6 cm. What is the side length of the square?

Rectangle perimeter = 2×(10+6) = 32 cm. 

Square perimeter = 4 × side = 32 → side length = 8 cm.

500

What has cities, but no houses and water but no fish?

a map?

500

A square has an area of 64 square cm. What is its perimeter?

Area = side × side = 64 → side = 8 units. Perimeter = 4 × 8 = 32 cm.

M
e
n
u