1260 628 312 154 788 (a) (b) (c) (d) (e) Which of the following numbers will come in place of (d)?

As per the details of question is given series in the form of ,
First series :-
First term = 1260
Second term = First term ÷ 2 - 2
⇒ Second term = 1260 ÷ 2 - 2 = 628
Third term = Second term ÷ 2 - 2
⇒ Third term = 628 ÷ 2 - 2 = 312
similarly , we can find the all others terms .
......... and so on .
Second series :-
First term = 788
Second term = First term ÷ 2 - 2
⇒ Second term = 788 ÷ 2 - 2 = 392
Third term = Second term ÷ 2 - 2
⇒ Third term = 392 ÷ 2 - 2 = 194
Fourth term = Third term ÷ 2 - 2
⇒ Fourth term = 194 ÷ 2 - 2 = 95
Fifth term = Fourth term ÷ 2 - 2
⇒ Fifth term = 95 ÷ 2 - 2 = 45.5
Hence , the place value of ( d ) is 45.5 .