When it's bad luck to meet a black cat?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

A worker is to perform work for you for seven straight days. In return for his work, you will pay him 1/7th of a bar of gold per day. The worker requires a daily payment of 1/7th of the bar of gold. What and where are the fewest number of cuts to the bar of gold that will allow you to pay him 1/7th each day?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Can you name an animal whose killing cannot be performed without spilling your own blood?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

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?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?