What's the best place to go shopping in the ocean?

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
Note, at the center, there is a bug which starts flying towards Car A at time T(0). When the bug reaches car B, it turns back and starts moving towards the car A. The speed of bug is 1m/second. After 5 hours all three stop moving.
What is the total distance covered by the bug?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Why is the Hole below a Lock?

Count the number of triangles in the below picture?

What does this Rebus Picture means ?

How is the moon similar to a dollar?

Before Mount Everest was discovered, what was the highest mountain in the world?