A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

A man died and leaves Rs.10,000 in his will. There are 6 beneficiaries- his 3 sons and their wives. The 3 wives receive Rs.3960 of which Priyanka gets Rs.100 more than Tanu and Neha gets Rs.100 more than Priyanka.
Pramod gets twice as much as his wife, Tushar gets the same as his wife, and Prashant gets 50% more than his wife.

Who is married to whom?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Using eight eights and addition only, can you make 1000?

A Club organizes a Running Race, and John, Jacob, Minda, and Tony participated.

The results are as follows

John beats Jacob
Minda beats Toni
Toni beats John

Who came first in the race?