Question

I did not understand this answer how did it come can anyone please help me!

Which number will complete the series?
6, 11, 21, 36, 56,
(a) 51 (b) 91
(c) 42 (d) 81
Answer : (d)
Reason : The sequence is +5, +10, +15, +20, +25.

Answer 1

listen already given values 6, 11, 21, 36, 56,..


and reason also given just solve it by adding
,.


example :- 6 + 5 = 11


11 + 10 = 21 


21 + 15 = 36


36 + 20 = 56


56 + 25 = 81


soo at last answer is 81 .




hope its help u

Answer 2

the reason is given so it can be solved easily, these question come in many competitive exams.
sequence is +5, +10, +15, +20, +25
so 6+ 5= 11  ,, 11+10= 21   ,, 21+15= 36  ,, 39+20 = 56   and so 56+25 = 81
so the answer is d) 81