What will come in place of the x in the following Number series? 15, 60, X, 960, 3840  Choose the correct choice from the following answers
A) 280
B) 960
C) 820
D) 800
E) 980
(960)   15 x 4 = 60, 60 x 4 = 240, 240 x 4 = 960, 960 x 4 = 3840.
<result>B</result>
What will come in place of the x in the following Number series? 15, 60, X, 960, 3840