DRDO STA Computer Science Tier 1 Mock Test - 5 Free Online Test 2026

How many whole numbers are there between 52 and 356 which are exactly divisible by 6?

The dimensions of a luggage box are 80 cm, 60 cm and 40 cm. How many sq. cm of cloth is required to cover the box?

A is twice as fast as B and B is one third as fast as C. If they together can complete work in 30 days. In how many days, A, B and C individually can do the same work?

We have to divide a sum of Rs.13,950 among three persons A, B and C. B must get the double of A’s share and C must get Rs.50 less than the double of B’s share. The share of A will be:

If ab= 25, then the minimum value of a+ b is:

A person earns Rs. 5000 as an interest in 5/2 years on a certain sum invested with a company at the rate of 10% per annum. Find the sum invested by a person in the company?

How many litres of a solution containing milk and water in the ratio 2:3 should be added to 30 litres of 70 % milk solution in order to get 60% milk solution?

40% of the students in a school are girls. If the number of boys is 1680, then what is the total number of students?

A TV costs Rs.20000 and the shopkeeper announces that the price of the TV will reduce at 10% per annum. What will be the cost price of the item after 2 years?

Directions

In the following questions, a statement is followed by some courses of action. Assume everything in the statement to be true, and decide which of the suggested courses of action logically follows for pursuing.

Statement:

Orissa and Andhra Pradesh have agreed in principle to set up a joint control board for better control, management and productivity of several inter-state multipurpose projects.

Courses of Action:

I. Other neighbouring states should set up such control boards.

II. The proposed control board should not be allowed to function as such joint boards are always ineffective.

DIRECTIONS: Arrange the following in a logical order.

1. Puberty

2. Adulthood

3. Childhood

4. Infancy

5. Senescence

6. Adolescence

Rihana walks 3 km from her house in the East direction to reach the bus stop. She takes a bus and goes 17 km ahead. After getting down from the bus, she walks 2 km on the left side, to reach the spot where she meets Santa. Santa and Rihana take a right from that point and travel 3 km to reach the marketplace. After shopping, they turn right from the marketplace and walk 2km to reach Sanita house for a cup of tea. What is the straight line distance between Rihana’s house and Sanita house?

Pointing to a man in the photograph a woman says: “He is the father of my daughter-in-law’s brother-in-law.” How is the man related to the woman?

The day on 18.09.1977 was Sunday. A couple was married on this date. In the next 15 years, there how many marriage anniversaries would fall on Sunday?

Select the correct combination of mathematical signs to replace * signs and to balance the given equation:

15 * 24 * 3 * 6 * 17

Find the odd one out from the given alternatives.

In the question below, there are few statements followed by few conclusions. You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusion logically follow(s) from the given statements.

Statements:

All horses are rivers.

All rivers are jungles.

No Jungle is flower.

Conclusions:

I. No horse is flower.

II. No flower is horse.

In the following question select the related word from the given alternatives.

Tuberculosis:Lungs ∷ Jaundice: ?

What should come next in the following letter sequence:

A A B A B C A B C D A B C D E A B C D E F A B C D E F G A B C D E F G

In a code language, A is written as B, B is written as C, C is written as D and so on, then how will STUDY be written in that code language ?

Directions

In the following question, some statements are given followed by some conclusions. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follow the given statements, disregarding commonly known facts.

Statements:

I. No statues are icons

II. Some busts are statues

Conclusions:

I. No icons are busts

II. All busts are icons

Each question given below consists of a statement, followed by two arguments numbered I and II. Decide which of the arguments is a 'strong' argument and which is a 'weak' argument and choose the corresponding option as your answer.

Should the age of drinking be reduced from 21 years to 18 years?

I. Yes, because alcohol is not as harmful to health as smoking is.

II. Yes, because if an 18-year old adult can have the right to vote and get married, he can also have the right to drink

Brass is an alloy of —

In a National Park protection is provided to

Kaziranga National Park is located in state of

The blood circulation inside the body takes approximately _________ seconds.

A + BX ® AX + B, is an example of_________.

Two richest known sources of edible protein are _______.

Who invented the aeroplane?