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Number System

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

360
45
48
36

ANSWER DOWNLOAD EXAMIANS APP

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

1043.75
1027.75
1037.75
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
Three seventh of a number is 12 more than 40% of that number. What will be the 60% of that number?

148
210
126
248

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3/7 x – 40/100 x = 12x = 35 * 1235 * 12 * 60/100 = 252/2 = 126

Number System
What should be the least number to be added to the 51234 number to make it divisible by 9?

3
6
4
5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The least number to be added to the numbers to make them divisible by 9 is equal to the difference of the least multiple of 9 greater than the sum of the digits and sum of the digits.Sum of digits = 15.Nearest multiple of 9 greater than sum of digits = 18.Hence 3 has to be added.

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

3434
7878
5656
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
On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is:

47719
48619
47649
47619

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

By hit and trail, we find that47619 * 7 = 333333.7) 333333 (47619     333333----------------        0

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