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Number System

Number System
If (74)² is added to the square of a number the answer so obtained is 7780. What is the number ?

48
50
49
47

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.or, x² + (74)² = 7780or, x² = 7780 - 5476 = 2304∴ x = 48

Number System
In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient?

13
12
0
20

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number = (12 * 35) = 420Correct quotient = 420/21 = 20

Number System
Complete the series : 11, 12, 17, 18, 23, 24 ...

12
None of these
30
14

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

None of these

Number System
576÷ ? x114=8208

11
8
10
9

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8

Number System
The difference between 72% of a number and 49% of the same number is 575. What is 9% of that number ?

245
295
275
225

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be x.Therefore, 72% of x - 49% of x = 575Therefore, (72 - 49)% of x = 575Therefore, 9% of x = 575/23 x 9 = 225

Number System
Complete the series : 1, 8, 27, 64, 125, 216 .....

373
353
343
363

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

343

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