Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

Count the number of balls in picture below:

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

A girl rode into a tourist spot out of the city on Thursday. She loved the place and decided to stay for a few days. She stayed for four days and then she left for back home on Thursday.

How can this be possible?

The Federal bank of London is abducted by the robbers. The head of the robbers asked the cashier to empty their money vault to them and when suddenly cashier got a call from her father. To avoid any suspicion, the robber asked the cashier to pick the call and reply her father in the shortest manner possible.

The cashier told her father "Is there an emergency father, Call me when you are free and I will help you in your furnishing" and then the cashier hung up the phone.

After 10 minutes, police arrived at the crime scene.

How did the police know about the robbery?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?