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

Why do we preferably have round manhole covers and not square ones?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

At the local model boat club, four friends were talking about their boats.

There were a total of eight boats, two in each colour, red, green, blue and yellow. Each friend owned two boats. No friend had two boats of the same colour.

Alan didn't have a yellow boat. Brian didn't have a red boat but did have a green one. One of the friends had a yellow boat and a blue boat and another friend had a green boat and a blue boat. Charles had a yellow boat. Darren had a blue boat, but didn't have a green one.

Can you work out which friend had which coloured boats?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

12345 a famous South Indian actor
567 is a path in jumbled form
8 & 10 are same letters
9 is one among the first six alphabets.
WHO AM I?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

Dwayne Johnson was running away with the loot from a heist in his car along with Vin Diesel. One tire was punctured and he dropped down to replace it. While changing the wheel, he dropped the four nuts that were holding the wheel and they fell into a drain. Vin Diesel gave him an idea using which they were able to drive till the rendezvous point.

What was the idea ?