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2 12 30 56............. series?
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Answer / johnnie
1x2 = 2
3x4 = 12
5x6 = 30
7x8 = 56
9x10= 90
11x12=132
so on
| Is This Answer Correct ? | 138 Yes | 18 No |
Answer / rajguru
2 12 30 56
diff= 10 18 26
diff= 8 8
next= 26+8=34
= 34 + 56=90
| Is This Answer Correct ? | 26 Yes | 5 No |
Answer / vishal pitaliya
diff between 2 and 12 is 10
---- 10+8=18
diff between 12 and 30 is 18
---- 18+8=26
diff between 30 and 56 is 26
----26+8=34
diff between 56 and 90 is 34
-----34+8=42
diff between 90 and 132 is 42
-----42+8=50
diff between 132and 182 is 50
and so on. so final ans is 2,12,30,56,90,132,182.....
| Is This Answer Correct ? | 16 Yes | 3 No |
Answer / sequential
02 = (1^2) + 1
12 = (3^2) + 3
30 = (5^2) + 5
56 = (7^2) + 7
Hence, the next term should be :
90 = (9^2) + 9
| Is This Answer Correct ? | 8 Yes | 2 No |
Answer / abhishek mittal
2*1, 4*3, 6*5, 8*7,....
=>next no will be 10*9 i.e 90
therefore, series becomes 2 12 30 56 90 132 n so on
| Is This Answer Correct ? | 6 Yes | 2 No |
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