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Number System

Number System
Find the number, when 15 is subtracted from 7 times the number, the result is 10 more than twice of the number

5
4
15
7.5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.7x -15 = 2x + 10 => 5x = 25 => x = 5

Number System
3√103823 = ?

44
41
52
47

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 3√103823 = 3√47 x 47 x 47 = 47

Number System
Find the number of factors of 300 excluding 1 and itself.

18
14
16
15

ANSWER DOWNLOAD EXAMIANS APP

Number System
The sum of two numbers is 22. Five times one number is equal to 6 times the other. The bigger of the two numbers is:

12
10
15
16

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be x and (22 - x). Then,5x = 6(22 - x) 11x = 132 => x = 12So, the numbers are 12 and 10.

Number System
In a fraction, twice the numerator is two more than the denominator. If 3 is added to the numerator and the denominator each, then the resultant fraction will be 2/3 .What was the original fraction

19/12
17/12
7/12
11/12

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

7/12

Number System
The difference between 72% of a number and 49% of the same number is 575. What is 9% of that number ?

295
245
225
275

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be x.Therefore, 72% of x - 49% of x = 575Therefore, (72 - 49)% of x = 575Therefore, 9% of x = 575/23 x 9 = 225

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