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Number System

Number System
√207.36 = ?

12.3
14.4
15.7
16.7

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

√207.36 = √20736/√100 = 144/10 = 14.4

Number System
A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is:

24
81
18
42

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the ten's and unit's digit be x and 8/x respectively. Then, (10x + 8/x) + 18 = 10 * 8/x + x 9x2 + 18x - 72 = 0 x2 + 2x - 8 = 0 (x + 4)(x - 2) = 0 x = 2 So, ten's digit = 2 and unit's digit = 4. Hence, required number = 24.

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

Cannot be determined
24
30
20

ANSWER DOWNLOAD EXAMIANS APP

Number System
1827÷ 36 x ?=162.4

3.2
1.9
4.3
2.6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3.2

Number System
A shopkeeper purchased 200 bulbs for Rs. 10 each. However, 5 bulbs were fused and had to be thrown away. The remaining were sold at Rs. 12 each. What will be percentage profit?

14
21
17
33

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

12

Number System
Of the three numbers, second is twice the first and is also thrice the third. If the average of the three numbers is 44, the largest number is

56
72
44
38

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

72

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