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Number System

Number System
The Twenty-First Century will start on January 1 in the year

2100
2000
2001
2101

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2001

Number System
What is the sum of 1 + 2 + 3+ ... + 27 ?

396
343
382
378

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378

Number System
Three numbers which are co-prime to one another are such that the product of the first two 551 and that of the last two is 1073. The sum of the three numbers is

93
74
85
110

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

85

Number System
50% of 8/15 of 9/4 of 5/3 of 333 = ?

444
555
333
666

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

50% of [8x9x5/15x4x3 x 333]= 50% of 666= 333

Number System
If all the fractions 3/10, 1/16, 4/11, 2/9, 1/7, 5/14 and 5/24 arranged in descending order of their values, then which one will be the third?

4/11
1/16
2/9
3/10

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3/10 = 0.3, 1/16 = 0.0625, 4/11 = 0.36, 2/9 = 0.22, 1/7 = 0.14, 5/14 = 0.36 and 5/24 = 0.214/11 > 5/14 > 3/10 > 2/9 > 5/24 > 1/7 > 1/163/10 will be the third.

Number System
(12)² - (4.4)² - (0.04)² = ?

125.6384
129.6384
124.6384
131.6384

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384

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