exam Maths Puzzle Numerical Ability

I am really stuck on this one, can someone help????

These data represent the population of a certain city.Year

Population (in thousands)
1950 18
1960 23
1970 29
1980

Read Solution (Total 0)

exam Other Question

Tow cars leave town at the same time going in the same direction. One travels 55 mpb and the other travels 48mph. In how many hours will they be 49 miles apart? I am to prove the following using PMI (the prinicple of mathematical induction)
Notation: ^ means exponent.

Let x be any real number in the interval (0,1). Prove that for any