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Number System

Number System
If 272/3 × 81-1/2 = 3x, the value of x is

1
3
2
0

ANSWER DOWNLOAD EXAMIANS APP

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?

36
33
34
35

ANSWER DOWNLOAD EXAMIANS APP

Number System
3251 + 587 + 369 - ? = 3007

1300
1375
1200
1250

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let 4207 - x = 3007 Then, x = 4207 - 3007 = 1200

Number System
Sum of the digits number is 8 and their product is 12. Find the difference between the digits?

None
4
2
6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4

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

6
10
3
7

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

10

Number System
7.8% of 12.5 + 2.5% of 161 = ?

12
2
5
9

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

7.8 x 12.5/100 + 2.5 x 161/100= 0.975 + 4.025= 5

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