Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

By what process could you make a 'Tea-Table' into food?

What can you see in the middle of March and April that you can never see in any other month?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?

Which digit occurred maximum times between the number 1 and 1000?

Can you spot the hidden girl in the picture below?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?