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Number System

Number System
What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12

9
7
2
3

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

9

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

4
3
5
6

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
The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is:

20
None of these
30
40

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Number System
(3² x 4² x 5) ÷ 36 = (?)² - 80

10
12
16
14

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10

Number System
The difference between 78% of a number and 59% of the same number is 323. What is 62% of that number ?

Rs. 1054
Rs. 986
Rs. 945
Rs. 926

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.78% of x - 59% of x = 323= 78x - 59x/100 = 323= 19x/100 = 323∴ x = 323 x 100/19 = 1700= 62% of 1700 = 1700 x 62/100 = 1054

Number System
If one-seventh of a number is 55 then 40% of that number = ?

163
147
154
171

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be x ,             Therefore, x/7 = 55Therefore, x = 55 x 7 = 385Therefore, 49% of 385 = 154

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