The sum of first n natural numbers is given by (+1)
/2. State true or false
Answers
Answered by
2
Answer:
true but not +1 only 1 plz follow
Answered by
1
Answer:
false
Step-by-step explanation:
Sn = 1+2+3+----+n
Sn=n/2 [2a+(n-1) d]
where a=1 ,d=2
Sn= n/2 [2×1+(n-1) ×1]
Sn= n/2 (n+1) .
therefore,the sum of first n natural no is n/2(n+1).
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