Study the pattern and complete the series - 6, 11, 21, 36, 56, ?

Answer 1

difference between two consecutive number in given series 5,10,15,20,25.....
difference between 6 & 11 =5
11 & 21=10
21 & 36 =15
36 & 56 =20
56 & .....=25 so,(56+25=81)

81 is the next value after 56

Answer 2

81 

The pattern is + 5, + 10, + 15, + 20,....
Missing Number = 56 + 25 = 81

Answer 3

It is increasing in multiples of 5.
Answer is 81.

Answer 4

Tha answer is 81