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Number System

Number System
124, 235, 447, 760, 1174, ?

1389
1689
1589
1489

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

+111, +212, +313, +414

Number System
The difference between 72% of a number and 49% of the same number is 575. What is 9% of that number ?

245
295
225
275

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be x.Therefore, 72% of x - 49% of x = 575Therefore, (72 - 49)% of x = 575Therefore, 9% of x = 575/23 x 9 = 225

Number System
If the sum of one-half of a number exceeds one-third of that number by 7 1/3, the number is:

20
18
15
30

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x. Then,(1/2 x + 1/5 x) - 1/3 x = 22/311/30 x = 22/3x = 20

Number System
If the of a two-digit number are interchanged, the number so obtained is greater than the original number by 18. If the sum of the two digits of the number is 14. What is the original number ?

68
64
62
66

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be 10x + y.No. formed by the interchange of digits = 10y + xWe have y - x = 2 .........(i)y + x = 14            .........(ii)Solving (i) and (ii), we get x = 6, and y = 8∴ the no. is 68.

Number System
On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is:

47719
47649
48619
47619

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

By hit and trail, we find that47619 * 7 = 333333.7) 333333 (47619     333333----------------        0

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
69
59
39

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

39

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