Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Which fur should we be getting from the Lion?

Can you count the number of triangles in the given picture?

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?

What does below rebus means ?

It is always ahead of me yet I can never see it. What is it?

I am the first thing you need while camping.
I am always with the person named Marcos Valencia and Carrick.
But Pogba Zlatan and Rooney think I am wasteful and do not need me.
I am the second to the last thing to add when you are making a patch.

What am I?

Count the number of triangles in the below picture?