Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

A man dies of old age on his 25 birthday. How is this possible?

In a basket of apples,
when counted in twos, there was one extra
when counted in threes, there were two extra when counted in fours, there were three extra
when counted in fives, there were four extra
when counted in sixes, there was five extra.

However, if the apples were counted in sevens, no extra apple was left. Can you calculate the minimum number of apples that were present in the basket?

The richest man in the city Mr Rechard is kidnapped. James Bond is appointed to the case. At the crime scene, a note is found written by Mr Richard. The note read:

"First of January, Fourth of October, Fifth of March, Third of June."

James Bond knew that somehow, the killer's name was hidden in the note. The following were the suspects:

Jack Richard, the son and the heir of property.
John Jacobson, the employee of Richard.
June Richard, the wife of Richard.

James Bond took only a few moments to deduce the killer's name. Can you tell who was the killer?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

What can you hold in your right hand, but never in your left hand?

Can you write down eight eights so that they add up to one thousand?