Eight of us go fourth, not back, to protect our king from an attack. What are we?

By using 'because' continuously three times, can you make an English statement ?

What has 88 keys?

What happened when the wheel was invented?

If 1+9+8=1, what is 2+8+9?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

What does this rebus puzzle means ?

What four weights can be used to balance from 1 to 30 pounds?