Three pairs of prime numbers under 20 with sums as multiples of 5 are: (2, 3), (7, 13), and (11, 19). Their sums are 5, 20, and 30, respectively, all divisible by 5. Class 6 Mathematics Ganita Prakash Prime Time Class 6 ...
Home/three pairs of prime numbers less than 20 whose sum is a multiple of 5