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Number System

Number System
The square root of 3 + “5 is :

“(5/2) + “(1/2)
“5 /2 - 1/”2
“3 /2 - 1/”2
“3 /2 + 1/”2

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

“(5/2) + “(1/2)

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
Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is:

6
5
4
10

ANSWER DOWNLOAD EXAMIANS APP

Number System
732.96 + 405.38 - 604.08 - 105.44 + 222.86 = ?

651.68
621.68
641.68
631.68

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 1361.20 - 709.52 = 651.68

Number System
√2304 x √? = 2832

3481
3681
3581
3381

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

√2304 x √? = 2832= 48 x √? = 2832= √? = 2832/48 = 59∴? = 59 x 59 = 3481

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

5385
3385
4385
2385

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

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