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Number System

Number System
ind the number, difference between number and its 3/5 is 50

124
120
123
125

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number = x,Then, x-(3/5)x = 50,=> (2/5)x = 50 => 2x = 50*5,=> x = 125

Number System
[(18.6 x 4.5) + (7.8 ÷ 0.24)] ÷ 3.2 = ?

46.3125
26.3125
25.3125
36.3125

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 83.7 + 32.5/3.2 = 116.2/3.2 = 36.3125

Number System
What is the sum of 1 + 2 + 3+ ... + 27 ?

396
378
382
343

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378

Number System
What value should come in place of ? in the given number series ? 15, 51, 162, 498, 1509, ?

3434
5656
7878
4545

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

15, (15 + 2) x 3 = 51,(51 + 3) x 3 = 162, (162 + 4) x 3 = 498, (498 + 5) x 3 = 1509(1509 + 6) x 3 = 4545

Number System
Find the greatest number which leaves the same remainder when it divides 25, 57 and 105.

18
8
12
16

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

105 - 57 = 4857 - 25 = 32105 - 25 = 80The H.C.F of 32, 48 and 80 is 16.

Number System
The difference between 78% of a number and 59% of the same number is 323. What is 62% of that number ?

Rs. 986
Rs. 1054
Rs. 926
Rs. 945

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.78% of x - 59% of x = 323= 78x - 59x/100 = 323= 19x/100 = 323∴ x = 323 x 100/19 = 1700= 62% of 1700 = 1700 x 62/100 = 1054

MORE MCQ ON Number System

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