Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Prove that twice of ten is the same as twice of eleven.

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

81 x 9 = 801. What must you do to make the this equation true?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

What happened when the wheel was invented?

With the help clues provided in the image, can you find the 5 digit key?

You bought me for dinner but never eat me. What am I?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?