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- Question
18800÷470÷20=?
Options- A. 1
- B. 2
- C. 3
- D. 4
- Correct Answer
- 2
ExplanationGiven Expression = = = 2
- 1. If x = 1 - q and y = 2q + 1, then for what value of q, x is equal to y ?
Options- A. 0
- B. 1
- C. -1
- D. -2 Discuss
- 2. If a - b = 3, a2+b2=29 , find the value of ab.
Options- A. 10
- B. 12
- C. 15
- D. 18 Discuss
- 3. Two numbers are such that the sum of twice the first number and thrice the second number is 36 and the sum of thrice the first number and twice the second number is 39. Find the difference between the numbers?
Options- A. 15
- B. 3
- C. 9
- D. 6 Discuss
- 4. An owner of a Dry fruits shop sold small packets of mixed nuts for Rs. 150 each and large packets for Rs. 250 each. One day he sold 5000 packets, for a total of Rs. 10.50 lakh. How many small packets were sold ?
Options- A. 2000
- B. 3000
- C. 2500
- D. 3500 Discuss
- 5. If 3x+7=x2+p=7x+5 , what is the value of P ?
Options- A. 17/2
- B. 25/3
- C. 33/4
- D. 41/5 Discuss
- 6. 50.003% of 99.8÷49.988 = ?
Options- A. 2
- B. 0
- C. 1
- D. 50 Discuss
- 7. If ab=45 and bc=1516 , then c2-a2c2+a2 is :
Options- A. 7/5
- B. 7/25
- C. 7/125
- D. 7 Discuss
- 8. 5 + 2 x 10/2 = ?
Options- A. 15
- B. 35
- C. 10
- D. 20 Discuss
- 9. 5 sin(x)+ 12 cos(x) + r is always greater than or equal to zero. What is the smallest value satisfied by 'r' ?
Options- A. -13
- B. 11
- C. 13
- D. -11 Discuss
- 10. A secret can be told to only 3 persons in 3 minutes. Each person in turn tells 3 other persons in the next 3 minutes and the processes continues accordingly. In 30 minutes how many persons can be told this secret in this way ?
Options- A. 88572
- B. 77854
- C. 99584
- D. 55654 Discuss
Simplification problems
Search Results
Correct Answer: 0
Explanation:
x = y <=> 1 - q = 2q + 1 <=> 3q = 0 <=> q = 0.
Correct Answer: 10
Explanation:
2ab=
29-9=20
=>ab=10
Correct Answer: 15
Explanation:
Let the required two numbers be a, b
From the given data,
2a + 3b = 36 .....(1)
3a + 2b = 39 .....(2)
Now, by solving 1 and 2 eqnts, we get
5a = 45
a = 9 ....(3)
Put (3) in (1), we get
2(9) + 3b = 36
=> 18 + 3b = 36
3b = 36 - 18
=> b = 18/3 = 6
Required, difference between the numbers = a + b = 9 + 6 = 15.
Correct Answer: 2000
Explanation:
Let 's' be the number of small packets and 'b' the number of large packets sold on that day.
Therefore, s + b = 5000 ... eqn (1)
Each small packet was sold for Rs.150.
Therefore, 's' small packets would have fetched Rs.150s.
Each large packets was sold for Rs.250.
Therefore, 'b' large packets would have fetched Rs.250b.
Total value of sale = 150s + 250b = Rs. 10.5 Lakhs (Given)
Or 150s + 250b = 10,50,000 ... eqn (2)
Multiplying equation (1) by 150, we get 150s + 150b = 7,50,000 ... eqn (3)
Subtracting eqn (3) from eqn (2), we get 100b = 3,00,000
Or b = 3000
We know that s + b = 5000
So, s = 5000 - b = 5000 - 3000 = 2000.
2000 small packets were sold.
Correct Answer: 17/2
Explanation:
Now,
Correct Answer: 1
Explanation:
50.003% of 99.8 ÷ 49.988 = ?
? ~= (50 x 100/100)/50
? ~= (50 x 100)/(100 x 50)
? ~= 1
Correct Answer: 7/25
Explanation:
=
Correct Answer: 15
Explanation:
Using BODMAS Rule,
First solve division, mutiplication and Addition
So here 10/2 = 5
Then 2 x 5 = 10
Now, 5 + 10 = 15.
Hence, 5 + 2 x 10/2 = 15.
Correct Answer: 13
Explanation:
Given,
5sinx + 12cosx ? -r
cosx) ? -r
= cosA => sinA =
=> 13(sinx cosA + sinA cosx) ? -r
=> 13(sin(x + A)) ? -r
we know that , -1 ? sin (angle) ? 1
=> 13sin (x + A) ? -13
Correct Answer: 88572
Explanation:
Given a secret is told to 3 persons in 3 minutes.
And if the process continues with each person saying 3 other persons,
In 30 minutes => the rocess for 10 times because each person time is 3 minutes.
Required number of persons =
Now it forms a geometric progression,
Sum to n terms is
Here a = 3, r = 3
=> 59048 x 3 /2
= 88572.
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