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Insert the missing number.
6.
2, 6, 12, 20, 30, 42, 56, (....)
A.
61
B.
64
C.
72
D.
70
Read Solution (Total 4)
-
- their difference makes a A.P series
so on solving the ans is 72 - 12 years agoHelpfull: Yes(4) No(1)
- The series is +2 +4 +6 +8 +10 +12 +14 +16
so 56+16 = 72 - 12 years agoHelpfull: Yes(3) No(2)
- the answer is c
+4,+6,+8,+10,+12,+14,+16 - 12 years agoHelpfull: Yes(0) No(1)
- 2
2*3=6
2*6=12
2*10=20
2*15=30
2*21=42
2*28=56
see the numbers which is multiplied with 2 ..... it's forming a series and series is +3,+4,+5 and so on...
so next number is 2*36=72 - 10 years agoHelpfull: Yes(0) No(0)
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