Find the sum of all natural numbers from 51 to 100
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Answered by
6
Answer:
we can simplify our workload a bit. Instead of adding up all the numbers by hand, we can just multiply 151 by 25.
151 x 25 = 3775
Answered by
0
51+52+53+....+100
no: terms = (100-51)+1 = 50
a= 51. d= 1
S = (n/2)[2a+(n-1)d]
= (50/2)[ 102+49]
= 25× 151 = 3775
Anonymous:
good job.....
we can use this formula also...... (a+n) [(n-a)+1/2]
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