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Number System

Number System
1256+4813+765=?

6834
6836
6831
6839

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

1256+4813+765= 6069+765=6834

Number System
If 5/7 of a number is 145, what is 180% of that number ?

365.4
345.4
375.4
355.4

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.∴ x x 5/7 = 145∴ x = 145 x 7/5 = 203Now, 203 x 180/100 = 365.4

Number System
If the fraction 8/6, 7/5, 18/13, 9/5 and 7/11 are arranged in descending order of their values, which one will be the second ?

1/9
3/4
2/7
7/5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8/6 = 1. 333, 7/5 = 1.4, 18/13 = 1.3849/5 = 1.8 and 7/11 = 0.636Therefore, Descending order is 9/5 > 7/5 > 18/13 > 8/6 > 7/11Therefore Second fraction is 7/5

Number System
What number should replace both the question marks (?) in the following question ?

83
82
85
84

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

84

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

129
275
288
225

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
What least number should be added to 8602 to make it a perfect square ?

47
36
51
41

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

So, (93)² = 8649So, the required number to be added to make a perfect square = 8649 - 8602 = 47

MORE MCQ ON Number System

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