What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

A man desired to get into his work building, however he had forgotten his code.
However, he did recollect five pieces of information
* Fifth number + Third number = 14
* The fourth number is one more than the second number.
* The first number is one less than twice the second number.
* The second number and the third number equals 10.
* The sum of all five numbers is 30.

What is the code ?

Find the next number in the series below

21 32 54 87 131 ?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

The answer I give is yes, but what I mean is no. What was the question?

Jim and Sarah are in a long-distance relationship. Jim buys an engagement ring for Sarah and wants to mail it to her. Unfortunately, the only way to ensure the ring will be received is to place a lock on the package. Jim has locks and Sarah has locks, but neither has keys for each other’s locks. How can they make sure the ring isn’t stolen?

There is something which you can be arrested for attempting but not for successfully completing.

Which digit occurred maximum times between the number 1 and 1000?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Solve this riddle by finding the odd one out from the rest.