What has many keys but can’t open a single lock?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

Can you replace the question mark with the correct number?

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

Why is the Hole below a Lock?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

How can you take 2 from 5 and leave 4?

Count the number of triangles in the given picture.

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?