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Number System

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

82
85
84
83

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

84

Number System
The product of two consecutive odd numbers is 6723. Find is the greater number.

77
85
83
80

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the first odd number be x.Then, the other odd number would be x + 2.∴ x(x+2) = 6723= x2 + 2x = 6723= x2 + 2x = 6723= x2 + 2x - 6723 = 0= x2 + 83 - 81 x - 6723 = 0= x(x+83) - 81 (x + 83) = 0= (x + 83) (x - 81) = 0= (x + 83) (x - 81) = 0= x - 81 = 0∴ x = 81Hence, greater number = x + 2 = 81 + 2 = 83

Number System
480% of 350 + 620% of 275 = ?

5385
2385
3385
4385

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 480 x 350/100 + 620 x 275/100= 1680 + 1705 = 3385

Number System
If the product of two successive positive integers is 4692, what is the smaller number ?

66
70
64
68

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

∵ 68 x 69 = 4692

Number System
The product of two successive numbers is 4556. Which of the following is the larger of the two numbers?

63
68
78
67

ANSWER DOWNLOAD EXAMIANS APP

Number System
The sum of two numbers is 22. Five times one number is equal to 6 times the other. The bigger of the two numbers is:

10
15
12
16

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be x and (22 - x). Then,5x = 6(22 - x) 11x = 132 => x = 12So, the numbers are 12 and 10.

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