What goes up but never comes down?

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

What is the word or phrase?

How do you go from 98 to 720 using just one letter?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

I’m tall when I’m young, and I’m short when I’m old. What am I?

Find the hidden panda in the image below.