two. 70 and 170.
number of prime numbers which are in the seven times tables: 1 prime numbers are in the seven times tables: 7 only
The number of combinations of six numbers that can be made from seven numbers will depend on if you can repeat numbers. In all there are over 2,000 different numbers that can be made.
Seven
Seven of them.
There are 34 prime numbers under 140.
Revise your question, it makes no sence.
19 numbers.
Seven
The 3 digit numbers under 500 are 100 through 499.
Seven of them.
There are 7 combinations. Each combination excludes a different one of the seven numbers.
it is seven(7)these are 23,29,31,37,41,43,47