7	4	5	9	20	52.5
3	(a)	(b)	(c)	(d)	(e)
Which of the following numbers will come in place of (c)?

As per the details in the question the series is in the form of
First series :-
First term = 7
Second term = First term × 0.5 + 0.5
? Second term = 7 × 0.5 + 0.5 = 4
Third term = Second term × 1 + 1
? Third term = 4 × 1 + 1 = 5
similarly , we can find the all others terms .
Second series :-
First term = 3
Second term = First term × 0.5 + 0.5
? Second term = 3 × 0.5 + 0.5 = 2
Third term = Second term × 1 + 1
? Third term = 2 × 1 + 1 = 3
Fourth term = Third term × 1.5 + 1.5
? Fourth term = 3 × 1.5 + 1.5 = 6
Hence , the place value of ( c ) is 6 .