A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

You are on your way to visit your Friend, who lives at the end of the hill. It is his birthday, and you want to give him the cakes you have made. Between your house and his house, you have to cross 5 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake. How many cakes do you have to leave home to make sure that you arrive at a friend's house with exactly two

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

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

Can anyone tell me a word in the English dictionary which has a silent 'z'?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?