Find out the wrong number in the given sequence of numbers.
1, 2, 6, 15, 30	Select: A) 2 B) 6 C) 15 D) 30 E) 91
1(result) + (1*1) = 2.   2(result) + (2*2) = 6.   6(result) + (3*3) = 15.   15(result) + (4*4) = 31.   Now we are getting 31 not 30.. So 30 is the wrong number of the given.   answer : 30
<result>D</result>
Find out the wrong number in the given sequence of numbers.
1, 2, 6, 15, 30