logicmathshortThe digits 0-9(0,1,2,3,4,5,6,7,8,9) can be rearranged into 3628800 distinct 10 digits numbers.
How many of these numbers are prime?

None. The sum of numbers from 0-9(0,1,2,3,4,5,6,7,8,9) is 45 and therefore can be divisible by 3 and 9.

## Similar riddles

See also best riddles or new riddles.

logicshortWhat happened when wheel was invented?

It caused a revolution.

logicmathshortDean Sam and Castiel are three brothers.
Interestingly their current age is prime.
What's more interesting that difference between their ages is also prime.
How old are they?

Sam : 2
Dean : 5
Castiel : 7
Age diff
7 - 2 = '5' is prime
7 - 5 = '2' is prime
5 - 2 = '3' is prime

logicmathshortUsing eight eights and addition only, can you make 1000?

888 + 88 + 8 + 8 + 8 = 1000

logicmathHow can you divide a pizza into 8 equal slices using only 3 straight cuts?

Cut 1: Cut the pizza straight down the middle into two halves.
Cut 2: Keeping the two halves in the place, cut the pizza straight down the middle at right angles to the first cut (you will be left with 4 equal quarters)
Cut 3: Pile the 4 quarters on top of each other and cut through the middle of the pile. You will be left with 8 equal slices.

logicshortA man hijacks an aeroplane transporting both passengers and valuable cargo. After taking the cargo, the man demands two parachutes, puts one of them on, and jumps, leaving the other behind. Why did he want two?

If the officials thought he was jumping with a hostage, they would never risk giving him a faulty parachute.

logicmathA train leaves from Halifax, Nova Scotia heading towards Vancouver, British Columbia at 120 km/h. Three hours later, a train leaves Vancouver heading towards Halifax at 180 km/h. Assume there's exactly 6000 kilometers between Vancouver and Halifax. When they meet, which train is closer to Halifax?

Both trains would be at the same spot when they meet therefore they are both equally close to Halifax.

cleanlogicshortWhat word becomes shorter when you add two letters to it?

Short.

logicshortA man was driving a truck at 60 mph. He did not have his headlights on and the moon was not up. Yet he did not hit the woman who crossed the road. How?

He was driving the truck during daytime.

logicmathshortFind three positive whole numbers that have the same answer added together or when multiplied together.

1,2, & 3.
1 x 2 x 3 = 6 and 1 + 2 + 3 = 6

cleanlogicshortWhat is as light as a feather but impossible to hold for several minutes?

Your breath.