John is looking at Jenifer, but Jenifer is looking at Jacob. John is married, but Jacob is not.

Is a married person looking at an unmarried person ?

What is always in front of you but can’t be seen?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Can you make a six-letter word using the letters N, A and B ?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

Find the 8 in the below-given Image.

Replace the question mark with the correct number in the below-given picture?

Find the smallest sentence with all the English alphabet.

I cannot talk, but I always reply when spoken to. What am I?