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Number System

Number System
(1024—263—233)÷(986—764— 156) =?

8
10
None of these
6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8

Number System
What is the sum of the local values of the digits 2, 3, 4, 5 in the number 2345?

5243
2345
2105
2435

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2000 + 300 + 40 + 5 = 2345

Number System
Find the nearest to 25268 which is exactly divisible by 467?

25208
25218
25308
25228

ANSWER DOWNLOAD EXAMIANS APP

Number System
If A + B = 30 and AB = 94, What is the value of A² + B² ?

824
920
712
625

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94                                = 900 - 188 = 712

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

20, 25
30, 25
21, 26
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
A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number?

8
6
3.5
None of these

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x. Then,3(2x + 9) = 752x = 16 => x = 8

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