Q. 2 The sum of a positive number and its reciprocal is twice the
difference of the number and its reciprocal. The number is :

Q. 3 In a certain code, ROUNDS is written as RONUDS. how will
PLEASE will be written in the same code

Q. 4 At what time between 5.30 and 6.00 will the hands of a clock be at right angles?

Q.5 Statements : I. All students are ambitious II. All ambitious persons are hard working
Conclusions : (i) All students are hard-working (ii) All hardly working people are not ambitious
Which of the following is correct?

Q. 6 Statement : Most students are intelligent
Conclusions :(i) Some students are intelligent
(ii) All students are not intelligent Which of the following is implied?

Q. 7 Statement: Most labourers are poor
Conclusions : (i) Some labourers are poor (ii) All labourers are not poor
Which of the following is implied?

Q. 8 Line access and avoidance of collision are the main functions of:

Q. 9 In the hypermedia database, information bits are stored in
the form of:

Q. 10 January 1, 1995 was Sunday. What day of the week lies on January 1,1996?

1. In a normal distribution, mean (m) ± 3s (3 standard deviation)
limits contains approximately –
a) 99.73% of the observations, b) 99.27% of the observations, c) 96% of the observations, d) 95% of the observation.

2. Half percent of the letters mailed in a city have incorrect address.
Out of 200 such letters mailed in a day, the probability of finding at
most 3 incorrect address is – a) 3e/8, b) 3/3e-1, c) 1/63-1, d) 5/2e-1.

3. If X is a random variable normally distributed with mean u and
variance s2, then the mean deviation about mean is given by –
a)1/2π, b) 2/π, c) σ/2π, d) 2σ

4. The level of significance is the probability of committing –
a) Type I error,
b) Type II error, c) Standard error, d) Probable error.

5. Which of the following tests is used to test a hypothesis about the
mean of a univariate normal distribution with unknown variance?
a) Normal test, b) Student’s test, c) Paired t-test, d) Chi-square test.

7. “Two or more events are called mutually exclusive, if the
occurrence of any one of them excludes the occurrence of the other”.
This statement is given by – a) M S Roy, b) Morris Hamburg, c) Murray Spiegel, d) Emile Bovel.

6. Mean and variance of Binomial distribution are –
a) m and s2,
b) m and nq, c) m and np, d) np and npq.

8. The probability of the happening of anyone of the several equally
likely events is the ratio of the number of events favourable to it to the
total number of – a) Possible errors, b) Impossible errors, c) Possible events, d) all of these. .

10. ……………….. is an act or process which leads to a single definite outcome.
a) Simple experiment,
b) Exhaustive event, c) Sampling, d) Manipulation

9. The ……………………… that one of the several mutually exclusive events X1, X2, X3, ……….., Xn, shall happen is the sum of the probabilities of the individual events.
a) Regression analysis,
b) Correlation analysis, c) Probability, d) Error.