what will be the sum of all numbers up to 100 by 1
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Step-by-step explanation:
a= 100
n= 100
d= 1
Sn= n/2(2a+(n-1)
= 100/2( 2*100+( 100-1)1)
= 50(200+ 99*1)
= 50*299
= 14950
Answered by
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Sum of the 1 to 100 numbers is
n(n+1)/2
100×(100+1)/2
100 ×101/2
50×101
5050
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