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Number System

Number System
{3√4913}² = ?

333
121
289
225

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = (3√4913)² = (17)² = 289

Number System
What is the sum of all the composite numbers up to 20?

128
130
132
131

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18 = 132

Number System
On dividing a number by 68, we get 269 as quotient and 0 as remainder. On dividing the same number by 67, what will be the remainder?

1
0
3
2

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number = 269 * 68 + 0 = 1829267) 18292 (273       18291         --------                1Required number = 1.

Number System
If 2^(2x-1) = 8^(3-x), then the value of x is:

5
2
9
6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2

Number System
If the difference between a number and its 2/5 is 240, find the number.

400
360
480
440

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be x Therefore x - 2x/5 = 240,        Therefore, 3x/5 = 240Therefore, x = 240x5/3 = 400

Number System
A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number?

None of these
6
3.5
8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x. Then,3(2x + 9) = 752x = 16 => x = 8

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