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CBSE Class 11-science Answered

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Asked by Kchawla94 | 04 Mar, 2019, 12:39: PM
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in 12 consequtive integers, there are 6 odd numbers and 6 even numbers. Difference bewteen consequtive odd or even integers is two.
 
Hence odd or even integers in a given 12 consequtive integers form arithmetic progression with common difference d
 
sum of n terms in arithmetic progression, if a is first term and d is common difference : (n/2) [ 2a + (n-1)d ]
 
Hence sum of odd or even numbers in a given 12 consequtive integers statring with x  :  3 [ 2x+10 ]  = 6[x+5]
Answered by Thiyagarajan K | 04 Mar, 2019, 03:36: PM

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