Find the next number in the sequence

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

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

How many sides does a circle have?

Replace the question mark with the correct number.

A woman named Maria was at the funeral of her mother. She met a nice young man that she had never seen before and after the service, they spent a bit of time together. Then she got busy and didn’t get his name or phone number before he left. She tried to find him, but no one knew who he was or how to contact him. A few weeks later, Maria’s older sister dies and the police suspect murder. Who killed the sister?

The more you take me, the more you leave me behind.
Who Am I?

When we see 2 but call 10?

What has many teeth, but cannot bite?