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Number System

Number System
The square root of 3 + “5 is :

“3 /2 - 1/”2
“(5/2) + “(1/2)
“5 /2 - 1/”2
“3 /2 + 1/”2

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

“(5/2) + “(1/2)

Number System
If the following fractions 7/6, 6/7, 5/3, 8/13 and 6/5 are arranged in descending order, which will be the last in the series?

9/13
8/13
7/13
6/13

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

7/6 = 1.166, 6/7 = 0.857,5/3 = 1.66,8/13 = 0.615,6/5 = 1.2Therefore, 5/3 > 6/5 > 7/6 > 6/7 > 8/13

Number System
Supply the missing figure : 2, 6, 12, 20, 30 ... 56

39
42
41
40

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

42

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

101
121
131
111

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
What is the least number that should be added to 5200 to make it a perfect square ?

225
288
129
275

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

We sec (73)² = 5329 and (72)² = 5184ie 5329 > 5200 > 5184So 129 should be added to make is perfect square.

Number System
Find the number of factors of 300 excluding 1 and itself.

14
15
18
16

ANSWER DOWNLOAD EXAMIANS APP
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