Ques:- In a group of 15,7 have studied Latin, 8 have studied Greek, and 3 have not studied either.How many of these studied both Latin and Greek
Recent Answer : Added by Admin On 2022-09-29 16:16:30:
Given:
In a group of 15 students,
7 have studied Latin,
8 have studied Greek,
3 have not studied either.
To find:
The number of students who studied both Latin and Greek.
Solution:
In a group of 15 students, have studied Latin, 8 have studied Greek, 3 have not studied either.
Therefore,
n(A∪B) = 15 – 3
n(A∪B) = 12
7 have studied Latin,
n(A) = 7
8 have studied Greek,
n(B) = 8
n(A∩B) is the number of students who studied both Latin and Greek.
n(A∩B) = n(A) + n(B) – n(A∪B)
n(A∩B) = 7 + 8 – 12
n(A∩B) = 15 – 12
n(A∩B) = 3
The number of students who studied both Latin and Greek is 3
Final answer:
3 of them studied both Latin and Greek.
Thus, the correct answer .3
Ques:- Find out the wrong number in each sequence:
8, 13, 21, 32, 47, 63, 83
A. 32
B. 47
C. 63
D. 83
Recent Answer : Added by A.Madhav On 2022-01-08 16:06:20:
47 is answer by consecutive adding of
8+5=13
13+8=21
21+11=32
32+14=46
46+17=63
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Ques:- How many 13 digit numbers are possible by using the digits 1,2,3,4,5 which are divisible by 4 if repetition of digits is allowed?
Recent Answer : Added by Admin On 2022-09-29 15:07:51:
Therefore, the number of possible 13 digit numbers using 1, 2, 3, 4, 5 which are divisible by 4
= x 3 + x 2
= (3 + 2)
=
= 244140625 ways
Ques:- 1. All G’s are H’s 2. All G’s are J’s or K’s 3. All J’s and K’s are G’s 4. All L’s are K’s 5. All N’s are M’s 6. No M’s are G’s
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Ques:- He shaves multiple times every day and yet he has a beard. Who is he?
Recent Answer : Added by Shashank Chauhan On 2021-09-14 15:41:47:
Barber
Ques:- 225 : 400 :: 625 : __
Recent Answer : Added by Karisidha Kallappa Devmore On 2022-11-21 15:54:34:
900
Ques:- The PSLV-C12 was successfully launched into space from t h e Satish Dhawan Space Centre at Sriharikota on 28 April, 2009. PSLV stands for?
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Ques:- Which of the following is a major rubber producing State inIndia?1 Kerala2 Assam3 West Bengal4 Orrisa
Recent Answer : Added by BALAJI On 2021-12-09 18:40:15:
Kerala
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Ques:- There is a safe with a 5 digit no. The 4th digit is 4 greater than the second digit, while 3rd digit is 3 less than 2nd digit. The 1st digit is thrice the last digit. There are 3 pairs whose sum is 11. Find the number.
Recent Answer : Added by Raimol Kurian On 2021-05-11 11:37:33:
65292
Ques:- Find the simple interest on Rs.500 for 9 months at 6 paisa per month?
Recent Answer : Added by Shravan On 2021-08-04 15:54:04:
Answer:270
Explanation: Formula is SI= P*R*T/100
Where P is principal amount
R is Rate
T is Time
So, SI= 500*6*9/100
i.e SI= 27000/100
SI= 270
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Ques:- Monday falls on 20th March, 1995. What was the day of 3rd November, 1994?
A. Sunday
B. Tuesday
C. Thursday
D. Friday
Recent Answer : Added by Anand On 2022-05-17 09:08:12:
sunday
Ques:- A train speeds past a pole in 15 seconds and a platform 100 m long in 25 seconds.What is Its length ?
Recent Answer : Added by Satwick On 2021-10-28 16:06:12:
Let’s say, length of train = x metres
Speed at pole = Speed at platform
x/15 = 100+x / 25
5x = 300 + 3x
2x = 300
x = 150m
So, train is 150 metres long.
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Ques:- Anil ranked 16th from the top and 23rd from the bottom among those who passed in an exam. 6 boys did not participate in the exam and 5 failed. How many boys were there in the class?
Ques:- Find the missing number of the series 0, 1, 8, 27, 64, ….. ?
Recent Answer : Added by sindhu On 2020-12-11 16:37:22:
125
Ques:- A river 2m deep and 45 m wide is flowing at the rate of 3 kmph the amount of water that runs into the sea per minute is?
Ques:- A man is 24 years older than his son. In two years, his age will be twice the age of his son. The present age of the son is:
Recent Answer : Added by Admin On 2022-09-28 18:02:37:
Let the age of the man be x
Then age of his son becomes (x−24)
2 years later from now,
Age of man will be = x+2
and age of his son will be =(x−24+2)=x−22
According to question,
2(x−22)=x+2
i.e., 2x−44=x+2
i.e., x=46
Therefore ,
Present age of man=46 years
And present age of his son =46−24=22 years
Ques:- A man jogs at 6 mph over a certain journey and walks over the same route at 4 mph. What is his average speed for the journey?
A. 2.4 mph
B. 4 mph
C. 4.8 mph
D. 5 mph
E. None of above
Recent Answer : Added by Admin On 2022-09-27 18:56:10:
C. 4.8 mph
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Ques:- Find the least number of complete years in which a sum of money put out at 25% compound interest will be more than double of itself?
Recent Answer : Added by Rajarshi Gangopadhyay On 2021-12-13 17:58:43:
3
Ques:- How does this particular position and job fit in with your career goals?
Given:
In a group of 15 students,
7 have studied Latin,
8 have studied Greek,
3 have not studied either.
To find:
The number of students who studied both Latin and Greek.
Solution:
In a group of 15 students, have studied Latin, 8 have studied Greek, 3 have not studied either.
Therefore,
n(A∪B) = 15 – 3
n(A∪B) = 12
7 have studied Latin,
n(A) = 7
8 have studied Greek,
n(B) = 8
n(A∩B) is the number of students who studied both Latin and Greek.
n(A∩B) = n(A) + n(B) – n(A∪B)
n(A∩B) = 7 + 8 – 12
n(A∩B) = 15 – 12
n(A∩B) = 3
The number of students who studied both Latin and Greek is 3
Final answer:
3 of them studied both Latin and Greek.
Thus, the correct answer .3