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Quantitative Aptitude Objective Questions { Operation on Numbers }



99. The sum of first 45 natural numbers is :
A.1035
B.1280
C.2070
D.2140

100. The sum of all even natural numbers between 1 and 31 is
A.16
B.128
C.240
D.512

101. (51 + 52 + 53 + ... + 100) = ?
A.2525
B.2975
C.3225
D.3775

102. How many natural numbers are there between 23 and 100 which are exactly divisible by 6 ?
A.8
B.11
C.12
D.13

103.  The sum of all two digit numbers divisible by 5 is
A.1035
B.1245
C.1230
D.945

104. The sum of how many terms of the series 6 + 12 + 18 + 24 + ??. is 1800 ?
A.16
B.24
C.20
D.18

105. How many terms are there in the G.P. 3, 6, 12, 24,...., 384 ?
A.8
B.9
C.10
D.11

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