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Number System

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?

17
33
21
14

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

12

Number System
(√6 + 1)² = ? + 2√6

7
5
6
8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = (√6 + 1)² - 2√6= (√6)² + 2 x √6 + 1 + 1² - 2√6= 6 + 2√6 + 1 - 2√6 = 6 + 1 = 7

Number System
The difference between 68% of a number and 35% of the same number is 1216. What is 28% of the number ?

1031.75
1027.75
1043.75
1037.75

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be xTherefore 68x / 100 - 35x / 100 = 1216      Therefore x = 1216 x 100 / 33Therefore 28% of x = 28x / 100 = 1216 x 100 / 33 x 28 / 100= 1216 x 100 x 28 / 33 x 1/100 = 1031.75

Number System
What should come in place of the question mark (?) in the given number series ? 888, 888, 444, 148, ?, 7.4

39
37
36
38

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let x be the missing number.Then888/888 = 1,888/444 = 2,444/148 = 3,148/x = 4= x = 148/4 = 37  and 37/7.4 = 5

Number System
On dividing number by 357, we get 39 as remainder. On dividing the same number by 17, what will be the remainder?

0
11
3
5

ANSWER DOWNLOAD EXAMIANS APP

Number System
What number should replace both the question marks (?) in the following question ?

84
82
85
83

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

84

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