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Number System

Number System
2/11 of 3/7 of 8/13 of 12012 = ?

576
241
321
449

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 2 x 3 x 8 x 12012/11 x 7 x 13 = 576

Number System
If (182)² is added to the square of a number, the answer so obtained is 47765. What is the number ?

121
131
111
101

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be xTherefore x² + (182)² = 47765Therefore x² = 47765 - (182)2                        = 47765 - 33124Therefore x² = 14641,                Therefore x = 121

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

112
114
118
116

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

Number System
735 chocolates were distributed equally among children in such a way that the number of chocolates received by each child is 60% of the total number of children. How many chocolates did each child rec

14
16
21
18

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number of children be 'x' Therefore, each child will receiveX x 60/100 = 3x/5 chocolates∴ X x 3x/5 = 735∴ x² x 735x5/3 = 1225∴ x = 1225 = 35∴ Number of chocolates = 3x/5 = 21

Number System
A number when multiplied by five times of itself give the value equal to 1445. What is the number ?

16
17
15
18

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x x 5x = 1445= 5x² = 1445= x² = 289∴ x = 17

Number System
The sum of four consecutive even numbers is 36. Find the sum of the squares of these numbers?

296
344
252
388

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the four numbers be x, x + 2, x + 4 and x + 6.=> x + x + 2 + x + 4 + x + 6 = 36=> 4x + 12 = 36 => x = 6The numbers are 6, 8, 10 and 12.Sum of their squares = 62 + 82 + 102 + 122 = 36 + 64 + 100 + 144 = 344.

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