A man fed pieces of grains to birds in a pattern of prime numbers starting with 7 for the first bird. How many grains did the 7th bird get?
Prime numbers are the set of numbers which is divisible by 1 or the number itself.
The pattern of prime numbers starting from 7 is
7,11,13,17,19,23,29……
So in this pattern, the number in the 7th position is 29.
So he fed 29 grains to the 7th bird.