7 two-digit numbers.
If the sum of the original seven numbers is 2814, and they're all increased by 70, the new total will be 2814+490=3304
Prime numbers are numbers 1< that can only be divided by 1 and themself. I think you may be think of primary numbers, but I'm not sure.
I think they are not
There are infinitely many decimal numbers between any two decimal numbers. For example, 6.27000000000000000000000000000000000000001 6.27000000000000000000000000000000000000002 6.27000000000000000000000000000000000000003 there are (I think) one duodecillion minus 1 such numbers. Of course, the list could be increased by another thousand if between the second and third of the above you inserted 6.27000000000000000000000000000000000000002001 6.27000000000000000000000000000000000000002002 6.27000000000000000000000000000000000000002003 and so on. Or by a million if, instead, you inserted 6.270000000000000000000000000000000000000020000016.270000000000000000000000000000000000000020000026.27000000000000000000000000000000000000002000003 and so on.
Increased BY refers to addition of any combination of numbers
by studying
The word increased in a math problem means you are adding to terms or numbers.
7 two-digit numbers.
xy +7
Spanish, English, and French settlers arrived in larger numbers and this increased the ethnic diversity in the American colonies.
False positives
"Transmutation" or possibly "nuclear fusion."
In 1876, but their numbers greatly increased in 1910.
Increased numbers of working women
neutrophils.
I think 110