Answer: 3,000,000$.  Lets mark the daughter share as X. Then a son share will be 2X and the widows share will be 3 * 2X= 6X.  Now we have 4 daughters, 5 sons and the widow so 4*x+ 5*(2x) + 6X = 10,000,000

so 20x=10,000,000 >> x= 500,000 and the widow got 6x=3,000,000

Since the date is a palindrome then YYYY is converted to MMDD so MM the largest value for MM can be 12 and for DD 31 and that gives us the date: 12/31/1321

Answer: 7 eggs

Because the last person bought a 1/2 egg + 1/2 of the eggs and no eggs were left that means he bought a 1/2 egg + 1/2 egg = 1 egg.  After the 2nd person bought 1/2 egg + 1/2 off the eggs we were left with one egg so that means the 1 egg +1/2 egg is the half of what was left so 1.5 *2 = 3 eggs. So the same implies to the 1st person, so (3+1/2 ) *2 = 7 eggs

Answer: 1211

20 % 5 > 2+0=2,  20/5=4 >> 24
21 % 7 > 2+1=3, 21/7=3 >> 33
42 % 6 > 4+2=6, 42/6=7 >> 67
66 % 6 > 6+6=12, 66/6=11 >> 1211

Answer: A baby.

Morning means the dawn of his life so he crawls an his hand and legs. Noon is the middle of his life so he walks on 2 legs. Evening means the end of his life when he uses a walking stick

Answer: 30
Explanation: Choose a color and paint the bottom side, so now we can choose one of 5 color for the top side
Now, what remains is the circular arrangement of the remaining 4 colors which can be done in (4-1)! = 3! = 6 ways (For n distinct objects, number of distinct circular arrangements are (n-1)!).
Hence, the answer is 3!*5 = 1*2*3*5  = 30 ways.

12000+1200+12=13212

The same implies to the even numbers set and to the natural numbers sets that the even numbers are part of them. But since we can find a formula that connects those two sets (divide every even number by two) so we say that they have the same strength.

Since only those with 7 legs are liars and only 1 is telling the truth that means we have 3 * 7 =21 kegs
Those who tell truth have 6 or 8 legs, so the total numbers of legs can be 21+6=27 or 21+8=29.
Only the 27 legs is an option so the green octopus is telling the truth.

While it may be true that the arrow doesn’t change its position ‘during’ the instant it does definitely still have a velocity, only you cannot observe that by just looking at a snapshot. But that doesn’t mean it’s not there.

An explanation might be that “moving” is not defined very clearly. If you rephrase  the word “moving” and use the word “velocity” instead, the paradox immediately breaks down: