Find the next number in the sequence

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

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

What is the fastest way to double your money?

Which is heavier: a ton of bricks or a ton of feathers?

A man is approaching a broad and barren land. He has a package with him. If somehow, he is unable to open the package before reaching the land, he will die.

Can you guess what is present in the package?

A game is being played where eight players can last for thirty-five minutes. Six substitutes alternate with each player in this game. Thus, all players are on the pitch for the same amount of time including the substitutes.

For how long is each player on the pitch?

Which city is three-fifths chick two third cat and 50% goat?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?