find the sum of first 123 even a cell numbers
Answers
Answered by
1
Answer:
Step-by-step explanation:
The sequence is 2,4,6.....146
Sn=1702
Answered by
0
Step-by-step explanation:
a=1
n=123
d=2
Sn= n/2[2a+(n-1)d]
=123/2[2×1+(123-1)2]
=7564
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