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Number System

Number System
Four-fifth of a number is 10 more than two-third of the same number. What is the number?

75
91
89
35

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

75

Number System
0.333 .... × 0.444 .... is equal to

1.333 ....
0.777 ....
0.121212 ....
0.148148148 ....

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

0.148148148 ....

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

5
3
6
4

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
In a pair of fractions, fraction A is twice the fraction B and the product of two fractions is 2/25. What is the value of fraction A?

1/5
1/25
Data inadequate
2/5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

A = 2B => B = 1/2 A, so, AB = 2/25 1/2 A2 = 2/25A2 = 4/25 A = 2/5

Number System
If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ?

179
163
124
146

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x Therefore, x² - (83)² = 8487x² = 8487 + (83)²x² = 8487 + 6889x²   = 15376Therefore, x² = 15376                    x = 124

Number System
A certain number successively divided by 2, 5 and 7 leaves remainders 1, 2 and 3 respectively. When the same number is divided by 70, what is the remainder?

34
36
35
33

ANSWER DOWNLOAD EXAMIANS APP
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