

Numbers - General Aptitude
Q1: The sum of even numbers between 1 and 31 is:A 6
B 28
C 240
D 512
ANS:C - 240 Let Sn = (2 + 4 + 6 + ... + 30). This is an A.P. in which a = 2, d = 2 and l = 30
Let the number of terms be n. Then,
a + (n - 1)d = 30
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