wat will be the next number in the series....
1,3,5,9,12,21,..
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Answer / anbu
actually this is not asked in mathematical point of view it
just tests how simple u r taking a problem into account
hence the next number is twenty three
becoz
on_e
thre_e
fiv_e
nin_e
twelv_e
twenty on_e
twenty thre_e
all ends with 'E'
| Is This Answer Correct ? | 29 Yes | 7 No |
next is 30........
b/w 1 n 3:2 is left 3 n 5 :4is left so one number b/w them.
b/w 5 n 9:7,8 is left 9 n 12: 10,11 is left so two nummbers.
b/w 12 n 21: 13,14,15,16,17,18,19,20 is left so eight numbers .
there b/w 21 and next number eight numbers should be left so 21+8=29. therefore next number is 30.
| Is This Answer Correct ? | 9 Yes | 6 No |
Answer / raman
1,3left 1 terms =1*1
3,5 left 2 terms=2*1
5,9 left 4 term=2*2
9,12 left 3 term=3*1
12,21 left 9 term =3*3
21,48,letf 27 terms=3*3*3
| Is This Answer Correct ? | 8 Yes | 5 No |
Answer / hardik j parekh
ans. : 30
9 is center point.
first three digits i.e. 1+3+5=9 and the difference between 1,3 and 3,5 is 2.
same as if we take 30 as a next number in the series, the series will be 12,21,30. now 30-21=9 and 21-12=9. again 9 comes in center.
| Is This Answer Correct ? | 0 Yes | 0 No |
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