What four weights can be used to balance from 1 to 30 pounds?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

What do you see in the given picture?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

A spaceship was lost. The detective was given a piece of paper. This was the location of the spaceship! This is what the slip had scribbled on it:
Juice, Umbrella, Potato, Ice, Tomato, Elephant, Rice.

Where is the spaceship?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

What is the riddle which can be asked all day with a different correct answer each time.

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

I’m orange, I wear a green hat and I sound like a parrot. What am I?