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Number System

Number System
The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits is greater than the original number by 54, then what will be the original number?

49
39
69
59

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

39

Number System
Find the least value of 3x + 4y if x2y3 = 6.

6
7
3
10

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

10

Number System
How many figures are required to number the pages the pages of a book containing 365 pages?

967
987
897
977

ANSWER DOWNLOAD EXAMIANS APP

Number System
148 x 3.75 x 4 = 111 x ?

19
17
24
20

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 148 x 3.75 x 4/111 = 20

Number System
When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ?

45
47
46
44

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46

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

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