Shoot at me a thousand times and I may still survive; one scratch from you and me will find your prospects take a dive. What am I?

Answer: eight ball

Solution:

When a girl was 7, her sister was 14, now the girl is 10. How old is her sister now?

Answer: 17

Solution:

Correct Answer: 17

Condition 1: 

Girl age = 7

Sister age = 14

So here age difference is 7 years

Condition 2:

Girl age =10

so Sister age = Girl age + 7=10+7=17

Hence Sister age is 17

I am the ruler of shovels, I have a double, I am as thin as a knife, I have a wife. What am I?

Answer: king of spades

Solution:

What can make an octopus laugh?

Answer: Ten tickles (tentacles)

Solution:

Round like a dishpan and smaller than a bathtub. But the ocean can’t fill it. What is it?

Answer: sieve

Solution:

What can get you there in eco style, pushed by your legs mile after mile?

Answer: bicycle

Solution: