Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Can you find the six hidden animals in the picture below?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

What word begins and ends with an E, but has only one letter?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?