Name______Period______

Quarter 2 Brain Teasers

1. What are the next 2 numbers in the following series?

2, 12, 36, 80, 150, 252, 392, ?, ?

2. When I drop, you shiver. When I rise, you break out n sweat. I’m always there. I’m always around you to some degree. But to you I differ whether you are dry or wet. What am I?

3. Mice are famous for their ability to multiply at breakneck speeds. You pick up a baby mouse from the pet store the day after it is born. The type of moue you bought gives birth once a month, birthing 12 babies each time. Baby mice mature and can give birth two months after they are born. 12 months after it is born, the mouse will die. In 10 months from now, how many mice will you have?

4. Willy and Wally are twins. Willy will celebrate his fifth birthday tomorrow. Wally will have to wait until next year to turn five. What is today’s date?

5. Johnny’s mother had three children. The first child was named April. The second child was named May. What was the third child’s name?

6. A clerk at a butcher shop stands five feet ten inches tall and wears size 13 sneakers. What does he weigh?

7. Before Mt. Everest was discovered, what was the highest mountain in the world?

8. How much dirt is in a hole that measures two feet by three feet by four feet?

9. Billie was born on December 28th, yet her birthday always falls in the summer. How is this possible?

10. My namesake’s the fiery one

Earth’s light source since it begun

And I am the Earth’s satellite

I’m much more visible at night

I’m the red planet, very cold

Supporting life in days of old?

My namesake comes from Mercury

Our midway point is reached with me

A massive gas giant am I

My moons did Galileo spy

Venus stands for love and beauty

With her approach you’ll soon be free!

Anticipation our last brings

Beautifully adorned with his rings

What are we?

11. If you were running a race and passed the person in 2nd place, what place would you be in now?

12. A farmer has five haystacks in one field and four haystacks in another. How many haystacks would he have if he combined them all in one field?

13. You are on your way to visit your grandma, who lives at the end of the valley. It’s her birthday, and you want to give her the cakes you’ve made. Between your house and her house, you have to cross 7 bridges, and as it goes in the land of make believe, there is a troll under every bridge!

Each troll, quite rightly, insists that you pay a troll toll. Before you cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they give you back a single cake. How many cakes do you have to leave home with to make sure that you arrive at grandma’s with exactly 2 cakes?

14. If a hen and a half will lay an egg and a half in a day in a half, how many eggs would six hens lay at the same rate in six days?

15. What is the smallest integer, which, when multiplied by 2 gives a number consisting of only 8’s?