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Number System

Number System
√360 - 225 x 2 + 379 = ?

18
17
20
19

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = √360 - 225 x 2 + 379 = √360 - 450 + 379 = √289= 17

Number System
If the sum of four consecutive numbers is 370, which the following is the third lowest number among them

90
92
91
89

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the four consecutive numbers be x, (x + 1), (x + 2), (x + 3) thenx + (x + 1) + (x + 2) + (x + 3) = 370= 4x + 6 = 370∴ x = 364/4 = 91∴ third lowest number among them = x + 1= 91 + 1 = 92

Number System
What is the value of 8/11 of 5/7 of 96% of 28875 ?

12900
14400
15400
13800

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number = 8 x 5 x 96 x 28875/11 x 7 x 100              = 14400

Number System
The simplest form of 1.5 : 2.5 is :

5 : 7
17 : 19
3 : 5
13 : 11

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3 : 5

Number System
7589 - ? = 3434

4155
11023
1123
4242

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let 7589 - x = 3434Then x = 7589 - 3434 = 4155

Number System
On dividing 2272 as well as 875 by 3-digit number N, we get the same remainder. The sum of the digits of N is:

11
12
13
10

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Clearly, (2272 - 875) = 1397, is exactly divisible by N.Now. 1397 = 11 * 127The required 3-digit number is 127, the sum of whose digit is 10.

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