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23 pairs
Humans have 23 pairs of chromosomes.
Three bonding pairs, thus a pyramid.
Humans have 23 pairs of chromosomes or 46 total.
12 pairs like human
There are no pairs of 2-digit numbers with a difference of 90 if both numbers are positive or both negative. However, with one positive and one negative, there are 71 pairs.
There are infinitely many pairs. An easy pair to remember is 0 and 19.
There are infinitely many pairs of numbers whose difference is 7. If x is any number and y = x + 7 then x and y will meet the requirements.For example, sqrt(2) and sqrt(2)+7.
71 and 103 is one of infinitely many pairs.
Many, many pairs.
Only 1 pair of prime numbers, 2 and 5, have a difference of 3. All prime numbers greater than 2 are odd so will have an even difference.
It has 2 pairs.
3 pairs
Six pairs
Two pairs.
23 pairs
23 pairs.