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

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

Aman has 1.15 rupees in his pocket. There are a total of 6 coins in his pocket.

When his friend asked him for a change, he could not give change for a rupee and five paisa.

Can you tell which coins he has?

What is the word or phrase below?
R | E | A | D

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

Can you solve the maths in the below-given picture equation?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

During a secret mission, an agent gave the following code to the higher authorities
AIM DUE OAT TIE MOD

However, the information is in one word only and the rest are fake. To assist the authorities in understanding better, he also sent them a clue, If I tell you any one character of the code, you can easily find out the number of vowels in the codeword.

Can you find out the code word?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?