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?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

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

Which Travels Faster? Solve below famous picture riddle:

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

What does below pictogram mean?

What is the next number in this series?

4,12,84,3612....