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Number System

Number System
(444 x 44 x 4) ÷ 40 ?

1953.6
1853.6
2053.6
2153.6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 444 x 44 x 4/40 = 1953.6

Number System
Sum of square of first number and cube of second number together is 568. Also square of the second number is 15 less than square of 8. What is the value of three-fifth of the first number ?

6
7
8
9

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the first number be x and the second number be y.∴ y² = 82 - 15 = 64 - 15 = 49∴ y = 7∴ x² + 73 = 568= x² + 343 = 568= x² + 568 - 343 = 225∴ x = √225 = 15∴ 15 x 3/5 = 9

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

42
41
40
39

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

42

Number System
The sum of three consecutive multiples of 3 is 72. What is the largest number?

21
24
36
27

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be 3x, 3x + 3 and 3x + 6.Then,3x + (3x + 3) + (3x + 6) = 729x = 63x = 7Largest number = 3x + 6 = 27.

Number System
The difference between 68% of a number and 35% of the same number is 1216. What is 28% of the number ?

1027.75
1037.75
1043.75
1031.75

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be xTherefore 68x / 100 - 35x / 100 = 1216      Therefore x = 1216 x 100 / 33Therefore 28% of x = 28x / 100 = 1216 x 100 / 33 x 28 / 100= 1216 x 100 x 28 / 33 x 1/100 = 1031.75

Number System
A number when multiplied by five times of itself give the value equal to 1445. What is the number ?

17
16
18
15

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x x 5x = 1445= 5x² = 1445= x² = 289∴ x = 17

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