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Number System

Number System
5525 ÷ 17 = √?

93025
99225
112225
105625

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

√? = 5525/17 = 325∴ ? = (325)² = 105625

Number System
One half of a two digit number exceeds its one third by 6. What is the sum of the digits of the number?

5
3
9
7

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x/2 – x/3 = 6=> x =63 + 6 = 9

Number System
In a two-digit number, the digit in unit's place is two more than three times the digit in ten's place. If the sum of the two digits is 10, what is the number ?

22
18
24
28

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be 10x + y.∴ y = 3x + 2 .......(i)And, x + y = 10 ......(ii)From (i) and (ii), x = 2, y = 8∴ Number = 28

Number System
Find the least number with which 16200 should be multiplied, to make it a perfect cube.

36
360
45
48

ANSWER DOWNLOAD EXAMIANS APP

Number System
The difference between two integers is 5. Their product is 500. Find the numbers.

30, 25
21, 26
20, 25
15, 20

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20So, the numbers are 20 and 25.

Number System
The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number

673
845
636
724

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.∴ 71% of x - 46% of x = 212∴ (71 - 46)% of x = 212∴ 25/100 x x = 212∴ x = 212 x 4 = 848∴ 75% of 848 = 848 x 75/100  = 636

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