ISRO General Intelligence & Reasoning Ability Questions and Answers: It is time for you to take the preparation seriously if you are appearing for the ISRO Written Test for the posts of Assistant, Junior Personal Assistant, Stenographer, Upper Division Clerk. As there will be high competition candidates should make use of this ISRO Mock Test General Intelligence & Reasoning Ability to learn what type of questions will be asked in the exam. So, that it enables you to prepare for the exam thoroughly.
ISRO General Intelligence & Reasoning Ability Quiz
Check these ISRO General Intelligence & Reasoning Ability Questions with Answers and go through the topics presented in the ISRO Syllabus and prepare for the exam for the post you have applied for.
1. Find the missing number.
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A. 34
B. 42
C. 44
D. 45
Answer: Option A
Solution:
Logic:
Column-Wise
(First Column Element × 4th Column element) – (2nd column element + 3rd Column element) = Last Column Element
(4×2)-(5+3) = 0
(7×4)-(3+4) = 21
(6×5)-(4+4) = 22
(9×5)-(6+5) = 34
2. Insect : Disease :: War : ?
A. Army
B. Defeat
C. Arsenal
D. Destruction
Answer: Option D
Solution:
Insect invites disease and War invites destruction.
3. Float : Sink :: Boat : ?
A. Ship
B. War
C. Submarine
D. Missile
Answer: Option C
Solution:
Float means above water and sink means under water. In same way, Boat floats on water and submarine moves under water.
4. In a certain code FIRE is coded as DGPC. What will be the last letter of the coded word for SHOT.
A. Q
B. R (correct)
C. S
D. P
Answer: Option B
Solution:
D is used for F.
G is used for I.
P is used for R.
and
C is used for E. Thus, it is clear that each letter of the word FIRE stands for each corresponding letter of the coded word DGPC two places ahead. By applying the same principle, the letters QFMR will stand for SHOT. Hence, the last letter of the coded word is R.
5. If TOUR is written in a certain code as 1234, CLEAR as 56784 and SPARE as 90847, what will be the 5th digit for SCULPTURE in the same code ?
A. 3
B. 4
C. 6
D. 0
Answer: Option D
Solution:
By, comparing letters and digit, we get
T = 1
O = 2
U = 3
R = 4
C = 5
L = 6
E = 7
A = 8
S = 9 and
P = 0
As the 5th letter is SCULPTURE is P and ‘0’ is used for P, therefore, 5th digit is the required code which is ‘0’.
7. Question: Study the given information and solve the following question.
Seven engineers T, U, V, W, X, Y and Z are sitting around a circular table and discussing about safety in integrated steel plant. U is sitting second to the right of Z who is sitting to the right of W. T is neither the neighbor of W nor the neighbor of Y. Y is second to the left of W who is sitting to the left of V. V sits in between Y and W. X sits between Y and U.
Q 1 – Which of the following pairs has only one person sitting between them, if the counting is done in clockwise direction?
Options :
A – W, X
B – T, Y
C – W, Y
D – X, Z
Answer : C
Explanation
8. Which symbol will be on the face opposite to the face with symbol * ?
A. @
B. $
C. 8
D. +
Answer: Option
Explanation:
The symbols of the adjacent faces to the face with symbol * are @, -, + and $. Hence the required symbol is 8.
9. Which digit will appear on the face opposite to the face with number 4?
A. 3
B. 5
C. 6
D. 2/3
Answer: Option
Explanation:
Here the common faces with number 3, are in same positions. Hence 6 is opposite to 2 and 5 is opposite to 1. Therefore 4 is opposite to 3.
10. It was Sunday on Jan 1, 2006. What was the day of the week Jan 1, 2010?
A. Sunday
B. Saturday
C. Friday
D. Wednesday
Answer: Option C
Solution:
On 31st December, 2005 it was Saturday.
Number of odd days from the year 2006 to the year 2009 = (1 + 1 + 2 + 1) = 5 days.
∴ On 31st December 2009, it was Thursday.
Thus, on 1st Jan, 2010 it is Friday.
11. What was the day of the week on 17th June, 1998?
A. Monday
B. Tuesday
C. Wednesday
D. Thursday
Answer: Option C
Solution:
17th June, 1998 = (1997 years + Period from 1.1.1998 to 17.6.1998)
Odd days in 1600 years = 0
Odd days in 300 years = (5 x 3) ≡ 1
97 years has 24 leap years + 73 ordinary years.
Number of odd days in 97 years ( 24 x 2 + 73) = 121 = 2 odd days.
Jan. Feb. March April May June
(31 + 28 + 31 + 30 + 31 + 17) = 168 days
Therefore 168 days = 24 weeks = 0 odd day.
Total number of odd days = (0 + 1 + 2 + 0) = 3.
Given day is Wednesday.
12. Look at this series: 2, 1, (1/2), (1/4), … What number should come next?
A. (1/3)
B. (1/8)
C. (2/8)
D. (1/16)
Answer: Option b
Explanation:
This is a simple division series; each number is one-half of the previous number.
In other terms to say, the number is divided by 2 successively to get the next result.
13. Look at this series: 36, 34, 30, 28, 24, … What number should come next?
A. 20
B. 22
C. 23
D. 26
Answer: Option B
Explanation:
This is an alternating number subtraction series. First, 2 is subtracted, then 4, then 2, and so on.
14. SCD, TEF, UGH, ____, WKL
A. CMN
B. B. UJI
C. VIJ
D. IJT
Answer: Option C
Explanation:
There are two alphabetical series here. The first series is with the first letters only: STUVW. The second series involves the remaining letters: CD, EF, GH, IJ, KL.
15. FAG, GAF, HAI, IAH, ____
A. JAK
B. HAL
C. HAK
D. JAI
Answer: Option A
Explanation:
The middle letters are static, so concentrate on the first and third letters. The series involves an alphabetical order with a reversal of the letters. The first letters are in alphabetical order: F, G, H, I , J. The second and fourth segments are reversals of the first and third segments. The missing segment begins with a new letter.
16. Which of the following diagrams indicates the best relation between Travelers, Train and Bus ?
A. 
B. 
C. 
D. 
Answer: Option C
Explanation:
Bus and Train are different from each other but some travelers travel by bus and some travel by train.
17. Which of the following diagrams indicates the best relation between Factory, Product and Machinery ?
Answer: Option D
Explanation:
Product and Machinery are different from each other but both are found in Factory.
18. How many cubes will be formed having only two faces varnished?
A – 45
B – 48
C – 47
D – 80
Answer : B
Explanation
Tiny cubes having only two faces varnished = (x – 2) × number of edges = (6 – 2) × 12 = 4 × 12 = 48. Hence option B is the answer.
19. How many cubes will be formed having only three faces varnished?
A – 8
B – 7
C – 9
D – 1
Answer : A
Explanation
The answer is the number of corners available which is 8. Hence option A is the correct answer.
20. Choose the correct water image of the question figure, from the given answer figures (assume that water is along XY)
• A) 1
• B) 2
• C) 3
• D) 4
Answer: Option C
Explanation
In the water image,
• The top side of the object becomes the bottom
• The bottom side of the object becomes the top
• The left and right sides of the object remain unchanged
Hence option C is correct.
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