Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

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?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

Find the last number in the series below:

voN luJ yaM raM ---

Can you count the number of quadrilaterals in the picture below?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

How can you drop a raw egg from a height onto a concrete floor without cracking it?

Solve the mathematical equation in the picture below.