Find the sum of all natural no.S divisible by 5 but less than 100
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Hi there!
Here's the answer:
The multiples of 5 in the Range [5 , 100)
are: 5, 10, 15, 20, 25, 30, 35, ……… ,95
5+10+15+20+25+……+95
These are in AP
a= 5
d= 5
l= 95
Sum of the terms in A.P
Sn = (n/2) [a+l]
Sn= (19/2) [5+95]
Sn= 19× 50
=> Sn= 950
•°• Sum of Natural Numbers from 5 bit less than 100 = 950
©#£€®s
:)
Hope it helps
Here's the answer:
The multiples of 5 in the Range [5 , 100)
are: 5, 10, 15, 20, 25, 30, 35, ……… ,95
5+10+15+20+25+……+95
These are in AP
a= 5
d= 5
l= 95
Sum of the terms in A.P
Sn = (n/2) [a+l]
Sn= (19/2) [5+95]
Sn= 19× 50
=> Sn= 950
•°• Sum of Natural Numbers from 5 bit less than 100 = 950
©#£€®s
:)
Hope it helps
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