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Number System

Number System
Three numbers are in ratio of 3: 4 :5. If the sum of first & third numbers is more than second number by 52, which will be largest number?

65
23
34
78

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

65

Number System
106 * 106 - 94 * 94 = ?

1904
1906
2400
2000

ANSWER DOWNLOAD EXAMIANS APP

Number System
The product of two consecutive odd numbers is 4095 What is the greater number ?

61
65
74
69

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65

Number System
Sum of the digits number is 8 and their product is 12. Find the difference between the digits?

None
2
6
4

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4

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

288
225
275
129

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
Find out the smallest possible number which will be divisible by 1122 as well as 153.

1366
2366
3366
4366

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3366

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