Think You Can Ace This Tricky IQ Test?

The first person shakes 11 hands, the next 10, and so on. Add all of those up and multiply by 2 for before and after.

40 mph for two hours will take you 80 miles.

There are 5 days in the working week (if you're lucky) and 15/5/=3.

It means "respondez, s'il vous plait", meaning "reply please!"

Sally and Becky are both taller than Jodie but we don't know which of them is taller than the other, or whether they are the same height.

All the others are primes. 25 divides by 5.

ALERT has 12 anagrams. STALE has only 10.

All the others are types of blue. Citrine is green.

TAERC makes CATER or CRATE.

Mustang, Colt, and Bronco are all cars named for horses. Wrangler is named for the person who takes care of the horses.

Sure, he has 70ft of rope, but he's going to lose some to the knots, and that puts him over his 10ft safety.

These are all dogs but the others are purebred. Labradoodles are mixed.

It'll just look right (if you have a high IQ, anyway).

If you're reckless, then you rush into things without thinking.

They're all kinds of triangles except the rhombus.

Rivers can briefly flow backward during certain types of conditions, namely natural disasters.

The pattern is that the first letter vanishes and a new letter on the end makes a new word.

It's all about cause and effect.

Coma, come, comp and comb are the four!

Three can be made into words with the addition of the word "back." Backstop, backstroke and background can all be made into words, but "back up" is two words.

Close-up, high-angle, and establishing are all types of a single shot. "Match" describes a relationship between two shots.

A daffodil is a flower!

If x+y=10 and x-y=4, then 4+2y=10, so 2y=6, so y=3.

Each machine is making a widget every 5 minutes!

At 99 days, they cover half. So at 98 days, they cover a quarter. It's an exponential curve.

They are polygons in ascending size order.

Three are metals. Silicon is not a metal.

If the sun just went out, there would be a delay of 8 minutes before anyone on the surface would know about it. Anyone on the dark side of the planet at the equator would just happily go 12 hours and 8 further minutes before they would wonder what happened to the sunrise.

A leaf is part of a tree which is part of a forest.

The Earth pulls on the object, but if it's going just the right speed, it won't escape the gravity - but it will start to "fall." If it goes the right speed it will fall at just the right speed to constantly fall in a perfect circle around the planet.

It's a list of squares, the next being 7 squared which is 49.

He has 30m cubed. The 10 boxes that are 1m cubed take up one 10m cubed layer. The five boxes that are 2m cubed take the next layer. The two boxes that are 5m cubed each take up the third layer.

Oxygen is the odd one out as the others are noble gases and it is not.

All the others are the numbers of the Fibonacci sequence.

It's counter-intuitive, but yep, it's Monday!