Ques:- Below is an equation that isn't correct yet. By adding a number of plus signs and minus signs between the ciphers on the left side (without changes the order of the ciphers), the equation can be made correct. 123456789 = 100 How many different ways ar
Recent Answer : Added by Khushi On 2022-09-15 16:36:16:
28
to arrange m objects in n places => nCm
i.e. for this example m=2(+,- sign) and n = 8(places between two number from 1 to 9)
SO, answer is : 8C2 = (8*7) / 2 = 28
Ques:- A watch was sold at a loss of 10%. If it was sold for Rs.140 more, there would have been a gain of 4%. Find the cost price?
Ques:- If a person walks at 4/5th of his usual spee he reaches 40min late. If he walks athis usual speed how much time does he travels.
Recent Answer : Added by Admin On 2020-05-17 12:01:10:
let x=speed
t=time taken when speed is x so…
xt=4/5x(t+40)
t=160 minutes
2 hr 40 minutes
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Ques:- A person was fined for exceeding the speed limit by 10mph. Another person was also fined for exceeding the speed limit by twice the same. If the second person was travelling at speed of 35mph . Find the speed limit ?
Recent Answer : Added by Admin On 2020-05-17 12:00:34:
let the speed limit be x.
speed by first rider S1 and 2nd rider be S2.
S1=x+10;
ans S2=x+2*10; and given S2=35.
solving we get x=15mph.
Ques:- A Man is sitting in the last coach of train could not find a seat, so he starts walking to the front coach ,he walks for 5 min and reaches front coach. Not finding a seat he walks back to last coach and when he reaches there,train had completed 5 miles. what is the speed of the train ?
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Ques:- Evaluate the greatest number of five digits which is divisible by 32, 36, 40, 42 and 48?
Recent Answer : Added by Admin On 2022-09-30 08:14:07:
answer= 90720
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Ques:- A reduction of 20% in the price of salt enables a lady to obtain 10kgs more for Rs.100, find the original price per kg?
Ques:- Which film of Aamir khan has gone for oscar?
Ques:- A large tanker can be filled by two pipes A and B in 60 and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?
Recent Answer : Added by Raja On 2022-11-15 16:37:18:
30mins
Let the total time taken to fill the tank be x minutes.
Then, work done by B in half hour + work done by (A+B) in half hour =1.
(
40
1
×
2
x
)+(
60
1
+
40
1
)×
2
x
=1
⇒
80
x
+
48
x
=1
⇒
240
3x+5x
=1
⇒8x=240
⇒x=30 min
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Ques:- In a mixture of milk and water, the proportion of milk by weight was 80%. If, in a 180 gm mixture, 36 gms of pure milk is added, what would be the percentage of milk in the mixture formed?
Ques:- . Biggest producer of sugarcane in the world(1) Cuba(2) India(3) China(4) Pakistan
Ques:- If you subtract -1 from + 1, what will be the result?
A. -1
B. 1
C. 2
D. -2
Recent Answer : Added by Alok On 2022-08-14 16:29:01:
1 – (-1) = 1 +1 = 2
Ques:- What popular journal did C. V. Riley and B. D. Walsh begin in 1868?
Recent Answer : Added by GAURAV WAGHELA On 2022-03-09 16:35:12:
Difference between 2 and 6 is = 4
Difference between 6 and 12 is = 6
Difference between 12 and 20 is = 8
Difference between 20 and 30 is = 10
Difference between 30 and 42 is = 12
Difference between 42 and 56 is = 14
So ne number will be with 16 Difference i .e 72
Therefore Answer will be 72
Ques:- There are three people A, B, C. Liars are of same type and Truth speaking people are of same type. Find out who is speaking truth and who is speaking false from the following statements:
A. A says: B is a liar.
B. B says: A and C are of same type.
Recent Answer : Added by Koshti bhavna On 2021-03-19 17:07:56:
B
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Ques:- If a and b are positive integers and (a-b)/3.5 = 4/7, then (A) b < a(B) b > a(C) b = a(D) b >= a
Recent Answer : Added by Mustafa On 2022-08-14 16:31:58:
Put a= 4, b = 2 in the equation and multiplying by 2/2 then you will get same value in right hand side. It mean a is 2a which mean b<a
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Ques:- Rs.800 amounts to Rs.920 in 3 years at simple interest. If the interest is increased by 3%, it would amount to how much?
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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
28
to arrange m objects in n places => nCm
i.e. for this example m=2(+,- sign) and n = 8(places between two number from 1 to 9)
SO, answer is : 8C2 = (8*7) / 2 = 28