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NIELIT 2020 : Revision Quiz 26

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Question 1

The LCM of two numbers is 45 times their HCF. If the sum of the LCM and the HCF of these two numbers is 1150 and one of the numbers is 125, then the other number is :

Question 2

A boat takes 90 minutes less to travel 36 miles downstream than to travel the same distance upstream. If the speed of the boat in still water in 10 mph, the speed of the stream is :

Question 3

A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?

Question 4

A, P, R, X, S and Z are sitting in a row. S and Z are in the centre. A and P are at the ends. R is sitting to the left of A. Who is to the right of P?

Question 5

Consider the following set of processes with their arrival and CPU burst time.

What is the average waiting time of these processes when shortest remaining time first policy is used ________.

Question 6

How many 128 × 8 bit RAMs are required to design 32 K × 32 bit RAM?

Question 7

Let L1 be a recursive language, and let L2 be a recursively enumerable but not a recursive language. Which one of the following is TRUE?

Question 8

Consider the system where initial value of the counting semaphore is 17 then various semaphore operations like 23 P,18 V,16 P,14 V,1 P are performed where P and V are wait and signal operations respectively. The final value of semaphore is

Question 9

The number of corona positive people in a city in a month follows poisson distribution with mean of 7.8. find the probability that number of corona positive is less than 3 during a randomly selected month is

Question 10

Class mark of class interval 176 – 180 is

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