28
The prime factors of 30 are 2, 3 and 5. The prime factors of 40 are 2 and 5. The prime numbers between 30 and 40 are 31 and 37.
The prime numbers between 20 and 30 are 23 and 29.
The numbers 23 and 29 are the only prime numbers between 20 and 30
30 has three prime factors. The prime factors are 2,3,5.
Prime numbers between the given numbers are 23 and 29
The prime factors of 20 are 2 and 5. The prime factors of 30 are 2, 3 and 5.
26
28
26
The prime factors of 30 are 2, 3 and 5. The prime factors of 40 are 2 and 5. The prime numbers between 30 and 40 are 31 and 37.
They are the only ones with just two factors.
The prime numbers between 20 and 30 are 23 and 29.
To find the HCF of 20 and 30, break them down into their prime factors: 20 = 2x2x5 30 = 2x3x5 The next step is to identify any common prime factors. In this case both numbers have a 2 and a 5 as prime factors. Multiply these together and you get: 2x5 = 10 Therefore the HCF of 20 and 30 is 10.
The numbers 23 and 29 are the only prime numbers between 20 and 30
Because the other numbers have more than two factors
There are two prime numbers between 20 and 30 which are 23 and 29