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Number System

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

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

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

0.148148148 ....

Number System
Find the smallest number which when divided by 13 and 16 leaves respective remainders of 2 and 5.

219
207
197
187

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let 'N' is the smallest number which divided by 13 and 16 leaves respective remainders of 2 and 5.Required number = (LCM of 13 and 16) - (common difference of divisors and remainders) = (208) - (11) = 197.

Number System
Complete the series : 1, 2, 3, 5, 8, 13 ....

9
4
1
7

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

1

Number System
A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is:

18
42
24
81

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the ten's and unit's digit be x and 8/x respectively. Then, (10x + 8/x) + 18 = 10 * 8/x + x 9x2 + 18x - 72 = 0 x2 + 2x - 8 = 0 (x + 4)(x - 2) = 0 x = 2 So, ten's digit = 2 and unit's digit = 4. Hence, required number = 24.

Number System
If the difference between a number and its 2/5 is 240, find the number.

440
360
400
480

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be x Therefore x - 2x/5 = 240,        Therefore, 3x/5 = 240Therefore, x = 240x5/3 = 400

Number System
The simplest form of 1.5 : 2.5 is :

17 : 19
3 : 5
5 : 7
13 : 11

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3 : 5

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