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Number System

Number System
(1024—263—233)÷(986—764— 156) =?

8
6
None of these
10

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8

Number System
If the difference between the squares of two consecutive numbers is 47, what is the smaller number ?

23
25
24
26

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be (x + 1) and x.Therefore, (x + 1)² - x² = 47x² + 2x + 1 - x² = 472x + 1 = 47Therefore, x = 46/2 = 23

Number System
If (182)² is added to the square of a number, the answer so obtained is 47765. What is the number ?

121
111
101
131

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be xTherefore x² + (182)² = 47765Therefore x² = 47765 - (182)2                        = 47765 - 33124Therefore x² = 14641,                Therefore x = 121

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

275
225
295
245

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
The population of a town increases by 15% in the first year and decreases by 25% in the second year. If its current population is 168480 then what will be its population after two years ?

145214
145714
145314
145914

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Population of the town= 168480 x 115/100 x 75/100= 145314

Number System
1008÷36=?

26
25
28
27

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

28

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