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Number System

Number System
What is the average of the following set of numbers ? 173, 192, 198, 204, 211, 223, 227

234
210
204
222

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Avg  = 173 + 192 + 198 + 204 + 211 + 223 + 227/7        = 1428/7        = 204

Number System
The difference between 45% of a number and 18% of the same number is 145.8. What is 30% of that number ?

162
245
141
188

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.45% of x - 18% of x = 145.8∴ x/100 (45 - 18) = 145.8∴ x = 145.8 x 100/27 = 540∴ 30% of 540 = 540 x 30/100 = 162

Number System
If 4 2/3 is subtracted form 10 1/2 and the difference is multiplied by 450, then what is the final answer?

2725
None of these
2875
2675

ANSWER DOWNLOAD EXAMIANS APP

Number System
In each of the following numbers, what should be the missing digit in the indicated place such that the number is a multiple of 11?

5
3
2
8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Divisibility of 11: If the difference of the sum of the digits at odd places and the sum of the digits at even places of a number is zero or a multiple of 11, then that number is divisible by 11.As per divisibility rule of 11, difference = (x + 21) - 18 = x + 3=> x + 3 = 11 => x = 8

Number System
84 * 29 + 365 = ?

2801
- 2801
2436
- 2071

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

- 84 * (30 - 1) + 365= - (84 * 30) + 84 + 365= - 2520 + 449 = - 2071

Number System
If the three fourth of a number is subtracted from the number; the value so, obtained is 163. What is that number ?

678
652
692
689

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number x (1 - 3/4) = 163∴ Number = 163 x 4 = 652

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