average of odd numberess than 100
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ODD NUMBERS BETWEEN 0 TO 100 ARE
1,3,5,7……..,99
HERE THESE ARE IN AP
WHERE a = 1
d = 2
So An = a + (n-1)d
99 = 1 + (n-1) 2
98 = (n-1)2
n-1 = 49 => n = 50
Then
Sn = (n/2) * (a + An)
=( 50/2 )* (1+99)
= 25 * 100
= 2500
Average = Sn/ n
= 2500 / 50
= 50
1,3,5,7……..,99
HERE THESE ARE IN AP
WHERE a = 1
d = 2
So An = a + (n-1)d
99 = 1 + (n-1) 2
98 = (n-1)2
n-1 = 49 => n = 50
Then
Sn = (n/2) * (a + An)
=( 50/2 )* (1+99)
= 25 * 100
= 2500
Average = Sn/ n
= 2500 / 50
= 50
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