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Number System

Number System
The Twenty-First Century will start on January 1 in the year

2001
2000
2101
2100

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2001

Number System
4/6 of 6/5 of 5/7 of a number is 96. Find the number.

170
162
164
168

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.∴ x x 4/6 x 6/5 x 5/7 = 96∴ x = 96 x 6 x 5 x 7/4 x 6 x 5 = 168

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
37/52
32/51
31/58

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 all the fractions 3/10, 1/16, 4/11, 2/9, 1/7, 5/14 and 5/24 arranged in descending order of their values, then which one will be the third?

4/11
1/16
3/10
2/9

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3/10 = 0.3, 1/16 = 0.0625, 4/11 = 0.36, 2/9 = 0.22, 1/7 = 0.14, 5/14 = 0.36 and 5/24 = 0.214/11 > 5/14 > 3/10 > 2/9 > 5/24 > 1/7 > 1/163/10 will be the third.

Number System
The number of prime factors of (6)10×(7)17×(55)27

61
91
101
41

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

91

Number System
Sum of two numbers is 80. Greater number exceeds by 5 from four times of the smaller. Find the numbers?

62, 18
65, 15
60, 20
64, 16

ANSWER DOWNLOAD EXAMIANS APP
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