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Number System

Number System
(1024—263—233)÷(986—764— 156) =?

None of these
6
8
10

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8

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

77
83
85
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
728.038 x 54.978 - 72.016 x 85.250 = ?

23900
53900
43900
33900

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 728 x 55 - 72 x 85.25 = 40040 - 6138 = 339900

Number System
666 / 6 / 3 = ?

333
111
37
84

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

666 * 1/6 * 1/3 = 37

Number System
If the difference between a number and its three-fourth is 18, find the number.

61
68
72
57

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.According to the question,x - 3x/4 = 18= x/4 = 18= x = 4 x 18 = 72

Number System
In how many different ways can the letters of the word TEST' be arranged ?

10
8
16
12

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The word TEST consists of 4 letters in which T comes twice ∴ Number of arrangements= 4!/2! = 4 x 3 x 2 x 1/2 x 1 = 12

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