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Question
FIND THE SUM OF ALL ODD NUBERS BETWEEN 0 AND 50
FIND THE SUM OF ALL ODD NUBERS BETWEEN 0 AND 50
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Solution
1,3,5,..........49
an = a+(n-1)d
49=1+(n-1)2
48/2=n-1
24=n-1
25=n
sn=n/2(a+an)
= 25/2(1+49)
= 25/2(50)
= 25* 25
= 625
1,3,5,..........49
an = a+(n-1)d
49=1+(n-1)2
48/2=n-1
24=n-1
25=n
sn=n/2(a+an)
= 25/2(1+49)
= 25/2(50)
= 25* 25
= 625
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