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NUMBER SYSTEM

Number System
If the sum of one-half of a number exceeds one-third of that number by 7 1/3, the number is:

15
20
30
18

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x. Then,(1/2 x + 1/5 x) - 1/3 x = 22/311/30 x = 22/3x = 20

Number System
Twenty times a positive integer is less than its square by 96. What is the integer?

24
20
30
Cannot be determined

ANSWER DOWNLOAD EXAMIANS APP

Number System
Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is:

5
4
6
10

ANSWER DOWNLOAD EXAMIANS APP

Number System
The sum of a number and its reciprocal is one-eighth of 34. What is the product of the number and its square root?

27
32
None of these
8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x. Then,x + 1/x = 34/8 8x2 - 34x + 8 = 0 4x2 - 17x + 4 = 0 (4x - 1)(x - 4) = 0 x = 4required number = 4 * √4 = 4 * 2 = 8.

Number System
Two-third of a positive number and 25/216 of its reciprocal are equal. The number is:

25/144
12/5
144/25
5/12

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12

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