What has one letter and starts with an E?

What brings you down but never up?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Spot 5 differences in two Christmas tree below:

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

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

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

One day Jenifer meets the Lion and the Tiger in the Forest of Forgetfulness. She knows that the Lion lies on Mondays, Tuesdays, and Wednesdays, and tells the truth on the other days of the week. The Tiger, on the other hand, lies on Thursdays, Fridays, and Saturdays, but tells the truth on the other days of the week. Now they make the following statements to Jenifer:

Lion: Yesterday was one of my lying days.

Tiger: Yesterday was one of my lying days too.

What day is it?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Find the next number in the sequence

1, 2, 6, 21, 88, __?