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Number System

Number System
A number when, 28 subtracted from it reduces to its one third. What is the value of 50% of that number?

24
42
84
21

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2/3 x = 28 => x = 4242 * 1/2 = 21

Number System
If the numerator of a fraction is decreased by 12.5% and the denominator is increased by 180% the resultant fraction is 1/2. What is the original fraction ?

3/5
8/5
1/5
7/5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the original fraction be x/y.∴ x x 87.5/100/y x 280/100 = 1/2or 87.5x/280y = 1/2∴ 175x = 280y∴ x/y = 280/175        = 8/5

Number System
(12.11)2 + (?)2 = 732.2921

20.2
17.2
14.2
24.2

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

24.2

Number System
Find the least number which when divided by 35 and 11 leaves a remainder of 1 in each case.

384
391
388
386

ANSWER DOWNLOAD EXAMIANS APP

Number System
Which number should replace question mark (?) in the following equation ? ?/342 = 38/?

112
116
118
114

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(?)² = 342 x 38Therefore, ? = √342 x 38 = √38 x 9 x 38 = 38 x 3 = 114

Number System
4.78% of 1255 + 3.24% of 440=0.5% of ?

11849
14849
13849
12849

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

0.5 x ?/100 = 4.78 x 1255/100 + 3.24 x 440/100= 59.989 + 14.256∴ ? = 74.245 x 100/0.5 = 14849

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