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Number System

Number System
Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number?

N2 + 1
N2
N(N + 1)/2
N(N + 1)

ANSWER DOWNLOAD EXAMIANS APP

Number System
If the following fractions 7/6, 6/7, 5/3, 8/13 and 6/5 are arranged in descending order, which will be the last in the series?

9/13
8/13
6/13
7/13

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

7/6 = 1.166, 6/7 = 0.857,5/3 = 1.66,8/13 = 0.615,6/5 = 1.2Therefore, 5/3 > 6/5 > 7/6 > 6/7 > 8/13

Number System
486+32×25—59=?

596
528
582
567

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

528

Number System
36% of 850+? % of 592 = 750

75
25
12.5
50

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

75

Number System
Find the greatest number which leaves the same remainder when it divides 25, 57 and 105.

16
8
18
12

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

105 - 57 = 4857 - 25 = 32105 - 25 = 80The H.C.F of 32, 48 and 80 is 16.

Number System
Supply the missing figure : 2, 6, 12, 20, 30 ... 56

39
40
42
41

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

42

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