Find out the wrong number in the given sequence of numbers.
1, 2, 6, 15, 31, 55	Choose the correct choice:
A) 55
B) 6
C) 15
D) 31
E) 91
1(result) + (1*1) = 2.   2(result) + (2*2) = 6.   6(result) + (3*3) = 15.   15(result) + (4*4) = 31.   31(result) + (5*5) = 56.   Now we are getting 56 not 55.. So 55 is the wrong number of the given.   answer : 55
<result>A</result>
Find out the wrong number in the given sequence of numbers.
1, 2, 6, 15, 31, 55