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Number System

Number System
The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is?

5
7
11
3

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7

Number System
What is the difference between the local values of 3 in the number 53403?

3003
3030
0
2997

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3000 – 3 = 2997

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

27
21
36
24

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
20% of the total number of students in a school play football. How many students do not play football if the total number of students in the school is 7600 ?

6000
5976
6080
5800

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

20% of 7600 = 1520Therefore, students who do not play football = 7600 - 1520 = 6080

Number System
What will be the next number in the following number series ?

162
182
177
191

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

1² + 1, 3² + 3, 5² + 5, 7² + 7

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

25228
25218
25308
25208

ANSWER DOWNLOAD EXAMIANS APP
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