வெல்லுங்கள் CSAT 2025 - 31: General Intelligence

Questions & Answers - (Multiple Choice) - General Intelligence
கொள்குறி வினா- விடைகள் - பொது நுண்ணறிவு

1. If one hundred numbers are written in a vertical coloumn starting from 1 to 100, what is the difference between sum of numbers from 46 to 79 and the sum of numbers between 46 and 79?
a. 0 b. 125
c. 33 d. 79

2. If 2*3 = 6 and 3*2 = 6.5, then which of the following rule can be applied to
a and b?
a. a*b = a + b + ab
b. a*b = a + b - ab
c. a*b = a + b + a/2
d. a*b = a + b + b/2

3. How many A4 sheets is equivalent to a A0 sheet?
a. 2 b. 4
c. 8 d. 16

4. What is the size of an A4(in mm) sheet?

a. 297 × 210 b. 594×420
c. 1188×840 d. 154×105

5. In a family there are three fathers , three sons , two grand fathers , two grandsons , one great father and one great son. Minimum how many male members in the family?
a. 9 b. 7
c. 5 d. 4

6. If red is called white, white is called black, black is called yellow, yellow is called green, green is called blue and blue is called indigo, then the colour of 'sun flower' will be
a. Green b. Indigo
c. Black d. Blue

7. Which of the expression will be true if the given expression A>B = C = D > E < is definitely true?
a. C = F b. A > F
c. B > F d. E < A

8. How many 3's in the following sequence of numbers are immediately preceded by 5 and immediately followed by 9 ?
6 2 5 3 9 7 1 5 3 9 5 3 4
a. 1 b. 2
c. 3 d. Nil

9. How many prime numbers are there from 2 to 41?
a. 11 b. 12
c. 13 d. 14

10. If x > y < z, then
a. x < z b. x > z
c. x = z d. Cannot be determined.

11. If you are in position to type 1 to 200, how many times you are needed to press keys provided one time one digit can be pressed by one key.
a. 400 b. 492
c. 502 d. 509

12 -13. There are some guest two-seat sofas in a house. One particular day some guests arrived. If the host asks one guest to sit in one sofa, one guest finds no seat to sit. If the host asks two guests to sit in one sofa, one sofa left blank.
12. How many sofas in the house?
a. 4 b. 5
c. 2 d. 3

13. How many guests visited the house?
a. 4 b. 5
c. 2 d. 3

14. If thirteen spiders make 13 webs in 13 days, one spider will make 1 web in how many days ?
a. 1 b. 26
c. 13 d. 169

15. In a dairy, 15 cows eat 15 bags of husk in 15 days. In how many days one cow will eat one bag of husk?
a. 30 b. 15
c. 225 d. 1/15

16. A fort had provisions for 300 men for 90days. After 20 days, 50 men left. The number of days for which the remaining food will
last is :
a. 70 b. 90
c. 112 d. 84

17. If x < y > z < t , then
a. x < y < t b. x < z < t
c. x > z < t d. None

18. What is the value of * if 65*3285 is exactly dividible by 9?
a. 7 b. 8
c. 9 d. 2

19. Today 08.05.2025 is Thursday. Our Independence day in 2025 is going to be celebrated on
a. Thursday b. Saturday
c. Friday d. Monday

20. I. x^2 + 6x + 8 = 0
II. y^2 -12y +36 = 0
Cisidering I and II Which of the following is definitely true?
a. y < x b. y > x
c. y = x d. No relation.

Answers

1. b 2. c 3. d 4. a 5. d

6. a 7. d 8. b 9. c 10. d

11. b 12. d 13. a 14. c 15. b

16. d 17. d 18. a 19. c 20. b

Explanation to answers

1. Sum of numbers from 46 to 79 =
46 + 47 +............+ 78 + 79
Sum of numbers between 46 and 79 =
47 + 48..........77 + 78
Difference = 46 + 79 = 125

2. a*b = a + b + ab => 2+3+6 = 11
a*b = a + b - ab => 2 + 3 - 6 = - 1
a*b = a + b + a/2 => 2 + 3 +2/2 =6 &
3 + 2 + 3/2 = 6.5
So third option is correct.

3. d. 16
A3 = 2A4 ; A2 = 2A3 ; A1 = 2A2
A0 = 2A1
So A0 = 16 A4

4. 297mm × 210mm

5.d
Great father - Grandfather - father - son

6. Sunflower is yellow
So Yellow is called green.

7. Clearly A>B = C = D > E => A > E
So E < A is the correct choice.

8. Check how many times 5 3 9 present in the sequence?
Only two times.

9. 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37 and 41.
13 prime numbers.

10. If x > y means y < x and
If y > z means y < z
So no relation can be obtained between x and z.

11. Single digit numbers - 9
Two digit numbers - 90
Three digit numbers - 101
Total number of digits
9 × 1 + 90 × 2 + 101 × 3
= 9 + 180 + 303 = 492.

12 - 13
Let the number of guests be x
and the number of sofas be y
So x = y + 1
x = 2(y - 1)
Here 2(y - 1) = y + 1 => y = 1 + 2 = 3
Hence x = 3 + 1 = 4
Therefore, the number of guests is 4
And the number of sofas is 3.

14. For 13 webs, 13 × 13 web days
For to make 1 web
(13×13)/(13) = 13 days.

15. For 15 cows for 15 days , the husk bags needed is 15.
15 bags => 15×15 cow days
1 bag => (15×15)/(15) = 15 cow days.
So one cow will eat one bag of husk for 15 days.

16. After 20 days, the food for 300 men for 70 days available.
After 20 days the number persons available is 300 - 50 = 250.
Required number of days
= (300×70)/(250) = 6×14 = 84 days.

17. There is no fixed relation between x and z as well as x and t.
None of these is the correct answer.

18. If the sum of the digits of a number is a multiple of 9, then the number is divisible by 9.
Here 6 + 5 + 3 + 2 + 8 +5 = 29.
Nearest 9 multiple is 36
* = 36 - 29 = 7.

19.
May 31 - 8 = 23
June = 30
July = 31
August = 15
Total = 99
When 99 is divided by 7 the remainder is 1. So the next day to Thursday is our Independence day in 2025 which is Friday.

20. x^2 + 6x + 8 = 0
=> (x + 2) ( x + 4) = 0
=> x = - 2 or - 4
y^2 -12y +36 = 0
=> (y - 6) (y - 6) = 0
=> y = 6
Here y is greater than x for both values of x = -2 and x = - 4.

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