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Number System

Number System
8988 / 8 / 4 = ?

280.875
4494
561.75
2247

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8988 * 1/8 * 1/4 = 2247/8 = 280.875

Number System
A man engaged a servant on the condition that he would pay him Rs.710 and a uniform after a year service. He served only for 8 months and got Rs.460 and a uniform. Find the price of the uniform?

Rs.40
Rs.20
Rs.25
Rs.30

ANSWER DOWNLOAD EXAMIANS APP

Number System
√9216 + √15376 = ?

220
224
231
227

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = √9216 + √15376= 96 + 124= 220

Number System
What should come in the place of question mark (?) in the number series given below?

157
158
159
160

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

160

Number System
The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is:

3/5
3/10
4/5
5/4

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

1/x - x = 9/20 20x2 + 9x - 20 = 0 20x2 + 25x - 16x - 20 = 0 5x(4x + 5) -4(4x + 5) = 0(4x + 5)(5x - 4) = 0x = 4/5

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:

10
12
13
11

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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