huda wrote:

The seventh number in a sequence of numbers is \(31\) and each number after the first number in the sequence is \(4\) less than the number immediately preceding it. What is the fourth number in the sequence?

A. \(15\)

B. \(19\)

C. \(35\)

D. \(43\)

E. \(51\)

GIVEN: term7 =

31Each number after the first number in the sequence is

4 LESS than the number immediately PRECEDING it.

This means, term8 =

31 -

4 =

27And term9 =

27 -

4 =

23And term10 =

23 -

4 =

19And so on.

This also tells us that each term is

4 GREATER than the number immediately FOLLOWING it.

So, for example, term6 =

31 +

4 =

35And term5 =

35 +

4 =

39And term4 =

39 +

4 =

43Answer: D

Cheers,

Brent

_________________

Brent Hanneson – Creator of greenlighttestprep.com

If you enjoy my solutions, you'll like my GRE prep course.

Sign up for GRE Question of the Day emails