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- Question
Two parallel chords on the same side of the centre of a circle are 5 cm apart. If the chords are 20 and 28 cm long, what is the radius of the circle?
Options- A. 14.69 cm
- B. 15.69 cm
- C. 18.65 cm
- D. 16.42 cm
- Correct Answer
- 15.69 cm
- 1. The average temperature of Monday to Wednesday was 37 C and of Tuesday to Thursday was 34 C. If the temperature on Thursday was 4/5 th of that of Monday, the temperature on Thursday was ?
Options- A. 35 c
- B. 36 c
- C. 34 c
- D. 32 c Discuss
- 2. In a party there are male and female members. If 15 female quit then the number of females will become double the number of males. If 45 males quit no. of female becomes five times the number of males. Find the number of females ?
Options- A. 175
- B. 145
- C. 165
- D. 135 Discuss
- 3. Simplify the fraction? 5 (2/7) - 3 (1/14) - 2 (1/14) - 1 (1/7) = ? + 3 (1/17)
Options- A. -4 (1/17)
- B. 5 (2/17)
- C. -2 (1/17)
- D. 3 (3/17) Discuss
- 4. Simplify the following expression? 40% of ( 244 x ? ) = 48
Options- A. 24
- B. 22
- C. 20
- D. 18 Discuss
- 5. Derivative of sinx by first principle?
Options- A. -sinx
- B. -cosx
- C. cosx
- D. sinx Discuss
- 6. 5 + 2 x 10 =
Options- A. 70
- B. 20
- C. 25
- D. 52 Discuss
- 7. Solve this inequality 3p - 16 < 20?
Options- A. p >= 12
- B. p <= 11/3
- C. p < 12
- D. p > 11/3 Discuss
- 8. 10+10(9) =
Options- A. 180
- B. 110
- C. 100
- D. 19 Discuss
- 9. If sin?+cosec?=2, the value of sinn?+cosecn? is
Options- A. 2
- B. 0
- C. 1
- D. 1/n Discuss
- 10. In an examination, a student scores 4 marks for every correct answer and loses I mark for every wrong answer. If he attempts in all 60 questions and secures 130 marks, the number of questions he attempts correctly, is:
Options- A. 35
- B. 38
- C. 40
- D. 42 Discuss
Simplification problems
Search Results
Correct Answer: 36 c
Explanation:
Monday + Tuesday + Wednesday = 37 x 3 -----------(1)
Tuesday + Wednesday + Thursday = 34 x 3---------(2)
Thursday = 4/5 of Monday ------------------(3)
subtract eqn (1) from (2) we get,
Thursday - Monday = -9
=> Monday - Thursday = 9.......(4)
From (3) & (4), we get
So,Thursday = 36 C
Correct Answer: 175
Explanation:
Let the number of males be 'M'
Let the number of females be 'F'
From the given conditions,
(F-15)=2M.....(i)
F=5(M-45).....(ii)
By solving the equations (1) & (2) we get M = 80
Then substitute M = 80 in (1)
F = 2M + 15
F = 2 x 80 + 15
=> F = 175
Therefore, number of males = 80 and females = 175 in the party.
Correct Answer: -4 (1/17)
Explanation:
Given fraction is 5 (2/7) - 3 (1/14) - 2 (1/14) - 1 (1/7) = ? + 3 (1/17)
It can be written as
(5 - 3 - 2 - 1) + (2/7 - 1/14 - 1/14 - 1/7) = ? + 3 (1/17)
-1 + 0 - 3 (1/17) = ?
=> ? = -4 (1/17)
Correct Answer: 20
Explanation:
We know that
Correct Answer: cosx
Correct Answer: 25
Explanation:
According to BODMAS rule,
After multiplication only, addition is done.
Hence,
5 + 2 x 10 = 5 + 20 = 25.
Correct Answer: p < 12
Explanation:
The given inequality is 3p - 16 < 20
For solving this inequality, follow these steps
Now add 16 on both sides
we get 3p - 16 + 16 < 20 + 16
=> 3p < 36
Now divide the above eqn with 3 on both sides
we get, 3p/3 < 36/3
p < 12.
Correct Answer: 100
Explanation:
According to BODMAS Rule,
10 + 10(9)
= 10 + 90
= 100
Correct Answer: 2
Correct Answer: 38
Explanation:
Let the number of correct answers be X.
Number of incorrect answers = (60 ? X).
Therefore, 4x ? (60 ? x) = 130
=> 5x = 190 => x = 38
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