Number Series Ques 174
Question-
Find the wrong term in the following series.
$5531\quad 5506\quad 5425\quad 5304\quad 5135\quad 4910\quad 4621$
(1) 5531
(2) 5425
(3) 4621
(4) 5135
(5) 5506
Show Answer
Correct Answer: (1)
Solution: (1)
The pattern is :
$5531-5506=25=5^{2}$
$5555-5506=49=7^{2}$
$5506-5425=81=9^{2}$
$5425-5304=121=11^{2}$
$5304-5135=169=13^{2}$
$5135-4910=225=15^{2}$
$4910-4621=289=17^{2}$
Clearly, 5531 is wrong which should be substituted by 5555.