THE NUMBERS 11,P, Q,21.5,...FORM AN LINEAR SEQUENCE.FIND THE VALUE OF P AND Q

Answer 1

three steps (differences) from 11 to 21.5

11 + 3 d = 21.5 ... d = 3.5

P = 11 + d

Q = 11 + 2 d

Answer 2

3d = 21.5 - 11
find d, then use it.

Answer 3

a = 11
a + 3d = 21.5
3d = 21.5 - 11 = 10.5
d = 3.5

p = 11 + d = 14.5
q = 11 + 2d = 18

Answer 4

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