CBSE Class 9 Answered
plz urgent
Asked by shrbha | 18 May, 2010, 10:08: PM
Expert Answer
d/13
1,3,3,6,7,9,...,12,21 can be composed from two different sequences,
1/ 1, 3, 7, ... where we are adding 2, 4, 6, 8, to the previous number to get next number.
2/ 3, 6, 9, ... where we are having multiples of 3.
Now, adjusting the second sequence in first, where second sequence elements are denoted boldface.
1, 3, 3, 6, 7, 9, 13, 12, 21.
Regards,
Team,
TopperLearning.
Answered by | 19 May, 2010, 09:41: PM
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