Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Through your logical capabilities, can you make 7 an even?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

Find the next number in the following series:
6, 14, 26, 98, __?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

If you say my name, I will no longer exist. What am I?

Can you solve the photo plexer logic ?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?

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

What word is pronounced the same if you take away four of its five letters?