3112331
To identify which of the given numbers are prime, we need to check each one for factors other than 1 and itself. Upon examination, 3112331 and 7176367 are prime numbers, while 23515 and 131123 are not (they have divisors). Therefore, the group containing all prime numbers from the list is {3112331, 7176367}.
You can lay the blocks out of decimal numbers by putting the numbers in groups.
2 groups
NOTHING!
by rounding off the numbers
3112331 and 251519 are prime.
C (251519) and B (3112331) are both prime. A (2359) is a multiple of 7 and D (7172949) is a multiple of 3. But, without the number for which they could be a factor, it is only possible to identify the prime numbers, not the one that is a prime factor.
odd numbers
the dimensionless numbers have the definition as that of dimensionless groups, and have all the properties which dimensionless groups have.
There are 6 groups.
2 groups
You can lay the blocks out of decimal numbers by putting the numbers in groups.
NOTHING!
Both are part of the real numbers.
by rounding off the numbers
No.
they are averages!