Find the sum of integers which are divisible by 2 from 11 to 50
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Answer
=2(225×26−25×6)=2×(325−15)=2×310=620.
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1
Answer:
620
Step-by-step explanation:
12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50
first term=12
difference=14-12=2
term=first term+(toral number-1)difference
50=12+(n-1)2
38=(n-1)2
n-1=19
n=20
sum of 20 numbers=n/2(a+l)
20/2(12+50)
10×62
620
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