find the sum of first 123 even natural numbers
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Answered by
193
hey bro!
#ur Ans
__________
we know that even natural number are:
2,4,6,8,10...........
it's in Ap series
so,
a= 2
d = 2
n = 123
s = n/2 [ 2a +(n-1) d]
putting the value
s = 123/2 [ 2*2+(123-1)*2]
s = 123/2[ 4+122*2]
s = 123 *2(2+122)
s = 123* 124
s = 15252 Ans
☺:-)✌
#ur Ans
__________
we know that even natural number are:
2,4,6,8,10...........
it's in Ap series
so,
a= 2
d = 2
n = 123
s = n/2 [ 2a +(n-1) d]
putting the value
s = 123/2 [ 2*2+(123-1)*2]
s = 123/2[ 4+122*2]
s = 123 *2(2+122)
s = 123* 124
s = 15252 Ans
☺:-)✌
atul103:
mark as brainlist ☺
Answered by
77
Hey here is your ans....
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