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# Usefull Maths Questions For NET Exams

Problem 1: If Logx (1 / 8) = - 3 / 2, then x is equal to
1.  - 4
2.  4
3.  1 / 4
4.  10
Solution: (2)

Problem 2: The exam scores of all 500 students were recorded and it was determined that these scores were normally distributed. If Jane's score is 0.8 standard deviation above the mean, then how many, to the nearest unit, students scored above Jane?
1. 394
2. 250
3. 400
4. 106
Solution:(4)

Problem 3: If Log 4 (x) = 12, then log 2 (x / 4) is equal to
1.  11
2. 48
3. -12
4. 22
Solution: (4)

Problem 4 : The probability that an electronic device produced by a company does not function properly is equal to 0.1. If 10 devices are bought, then the probability, to the nearest thousandth, that 7 devices function properly is
1. 0.057
2. 0.478
3. 0.001
4. 0
Solution: (1)

Problem 5: The population of a country increased by an average of 2% per year from 2000 to 2003. If the population of this country was 2 000 000 on December 31, 2003, then the population of this country on January 1, 2000, to the nearest thousand would have been
1. 1 846 000
2. 1 852 000
3. 1 000 000
4. 1 500 000
Solution: (1)

Problem 6:If f(x) is an odd function, then | f(x) | is
1.  an odd function
2.  an even function
3.  neither odd nor even
4.  even and odd
Solution:(2)