It can be easily calculated that the digits 0 to 9 can be arranged into 3628800 distinct ten-digit numbers.
But I also know how many of these numbers are prime.
Do you?
Zero
The sum of numbers from zero to nine is 45 and can be divisible by 3 and 9.
Assume you have the white pieces, can you win in a half a move ?
White should grab the rook from a1, place it at d1 and complete the castling move.
1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent
=> 1 dollar = 1 cent
solve this tricky problem ?
step 3 is wrong
Solve this logical number series puzzle by replace question mark with the correct number
9090 = 4
1234 = 0
6055 = 2
9081 = 4
8888 = ?
8
No Of circles in the number.
There are two arch enemy Messi and Ronaldo which hate each other to an extreme.
One day two are going together and a Jeanie appeared in from of them them.
Jeanie grant 3 wishes to Ronaldo and one to Messi.
Messi replied smartly 'Give me twice of whatever Ronaldo demands'.
Ronaldo asked his 1st wish 'Give me 10000 billion dollar'. Soon Messi gets 2000 billion dollar.
Ronaldo asked his 2nd wish 'Give me one mansion in every country of the world'. Soon Messi gets two mansion in every country of the world?
Whats should be Ronaldo third wish ?
He askes the Jeanie to beat him half to death.
I know a ten letter word in the English language which can be typed using only the top rows of the computer keyboard.
Typewriter
You have two buckets of 11liter and 6liter.
How can you measure exactly 8liter ?
Steps 11-Liter 6Liter
1. 11 -
2. 5 6
3. 5 0
4. 0 5
5. 11 5
6. 10 6
7. 10 0
8. 4 6
9. 4 0
10. 0 4
11. 11 4
12. 9 6
13. 9 0
14. 3 6
15. 3 0
16. 0 3
17. 11 3
18. 8 6 ==> got it
A frog fell on a bottom of the well.
The well is 30 feet deep.
During day time, the frog jumps 5feet while at night when the frog sleeps he slip back 4feet.
In how many days frog will come out from the well ?
26days
In 25days, he will jumo 25feet and den next five feet will make him out of the well
A Sweet girl purchased a book from a bookkeeper and give him Rs. 100.
The cost of the book is Rs.30 but the bookkeeper had got no change, so he gets the change from next shop and returns the girl her 70 Rupees.
After some time the next shopkeeper comes with the 100Rs note and told the bookkeeper that the note is fraud, so he takes money back.
How much loss did the bookkeeper face?
100Rs
