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Number System

Number System
The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is?

11
3
5
7

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7

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

576
321
241
449

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

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

16
18
21
14

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
The product of two consecutive odd numbers is 4095 What is the greater number ?

65
61
74
69

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65

Number System
Find the least number when successively divided by 2, 3 and 7 leaves remainders 1, 2 and 3 respectively?

65
75
67
61

ANSWER DOWNLOAD EXAMIANS APP

Number System
If 272/3 × 81-1/2 = 3x, the value of x is

2
1
0
3

ANSWER DOWNLOAD EXAMIANS APP
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