Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

Find the next number in the sequence

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

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?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

You need to arrange three 7 and mathematical symbols to form number 1?

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?

Find the value of "a" by solving the maths equation in the picture below:

A Car is crossing a bridge 2 miles long. The bridge can only hold 10000 lbs, which is the exact weight of the car. The Car makes it half way across the bridge and stops. A bird lands on the car. Does the bridge collapse? Explain.

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?