How can you write nineteen in a manner that if we take out one, it becomes twenty?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Jenifer and Jesica are having a conversation.

Jenifer: I am definitely not over 30.
Jesica: I am 28 and you are surely 5 years older to me at least.
Jenifer: No, you are at least 29.

You are told that both of them are lying throughout in the conversation. Can you find their respective ages?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

Can you find out the total number of triangles in the given figure?

I have feet, but no legs. Which animal Am I?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?