Question

Make a grid of natural numbers from 400-500. Find all the prime numbers in the grid. Identify all
pairs of twin primes in the grid that you have made

Answer 1

Prime numbers between 400 - 500 are  401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499 .Pair of twin primes are 419 and 421, 431 and 433, 461 and 463.

Answer 2

419 and 421,431 and 433,461 and 463 are the twin primes between 400 and 500.the set prime no.s are 401,409,419,421,431,433,439,443,449,457,461,463,467,479,487,491,499.