BA LLB Banaras Hindu University 2017 Solved Paper

Question : 124 of 170

Marks: +1, -0

The sum of all even numbers between 21 and 51 is

Solution:

Number are

22,24, . . . . . ., 50

n=\;{50-22}/{2}+1=15

Sum

=\;{15}/{2}[22+50]=540

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