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Number System

Number System
A number exceeds by 25 from its 3/8 part. Then the number is?

40
35
32
39

ANSWER DOWNLOAD EXAMIANS APP

Number System
5358 * 51 = ?

273268
273358
273348
273258

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

5358 * 51 = 5358 * (50 + 1) = 5358 * 50 + 5358 * 1= 267900 + 5358 = 273258

Number System
How many numbers up to 100 are divisible by 7?

107
93
14
100

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

100/7 = 14 2/7 => 14 Numbers

Number System
A basket contains 5 blue, 4 green and 3 red ball. If three balls are picked at random, what is the probability that at least one is red ?

34/55
31/58
37/52
32/51

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Probability of having no red ball is9C3 / 12C3 = 21/55Probability of having at least one red ball is 1 - 21/55 = 34/55

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

2247.6
1847.6
1747.6
1547.6

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

Number System
√(17)² + (17)² + (5)² - 2 = ?

16
19
18
17

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = √49 + 289 + 25 - 2 = √361 = 19

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