What do you answer even though it never asks you questions?

I look at you, you look at me I raise my right, you raise your left. What am I?

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

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

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

Decode below rebus
D
N
A
T
S , D