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Number System

Number System
(12)² - (4.4)² - (0.04)² = ?

131.6384
129.6384
124.6384
125.6384

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384

Number System
What is the difference between the largest and the smallest number written with 7, 7, 0, 7?

693
6893
6993
6093

ANSWER DOWNLOAD EXAMIANS APP

Number System
What least number should be added to 8602 to make it a perfect square ?

47
36
51
41

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

So, (93)² = 8649So, the required number to be added to make a perfect square = 8649 - 8602 = 47

Number System
The difference between the two digit number and the number obtained by interchanging its digits is 54. The difference between the digits is?

Nothing can be said.
4
6
1

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(10x + y) – (10y + x) = 54x – y = 6

Number System
Sum of two numbers is 15. Two times of the first exceeds by 5 from the three times of the other. Then the numbers will be?

7, 8
6, 9
10, 5
9, 6

ANSWER DOWNLOAD EXAMIANS APP

Number System
If 35% of a number is 899.5, what is 68% of that number ?

1747.6
1847.6
1547.6
2247.6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Suppose the number is x.Then 35% of x = 899.5∴ 68% of x = 68/35 x 899.5 = 1747.6

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