Discussion
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- Question
Speeds of a boat along the current and against the current are 14 km/hr and 7 km/hr respectively. What is the speed of boat (in km/hr) in still water?
Options- A. 3.5
- B. 7.5
- C. 10.5
- D. 9.5
- Correct Answer
- 10.5
- 1. 10 men can make a wall in 8 days. How many men required to complete the same work in half days?
Options- A. 80
- B. 100
- C. 120
- D. 160 Discuss
- 2. A and B separately can complete a work in 6 days and 3 days respectively. If they work together, then in how many days will they complete the work?
Options- A. 4 days
- B. 3 days
- C. 2 days
- D. 5 days Discuss
- 3. (5568 ÷ 87) 1/3 + (72 x 2) 1/2 = (?) 1/2
Options- A. 256
- B. 4
- C. ?2
- D. 16 Discuss
- 4. ( .803 x .647 + .803 x .353 ) =?
Options- A. .803
- B. 1
- C. .45
- D. 1.450 Discuss
- 5. If 6 years are subtracted from the present age of Randheer and the remainder is divided by 18 than the present age of his grandson Anup is obtained. If Anup is 2 years younger to mahesh whose age 5 years, then what's the age of Randheer?
Options- A. 96 years
- B. 84 years
- C. 48 years
- D. 60 years Discuss
- 6. In a family, the average age of father and mother is 35 yr. The average age of the father, mother and their only son is 27 yr. What is the age of the son?
Options- A. 12 yr
- B. 11 yr
- C. 10.5 yr
- D. 10 yr Discuss
- 7. 15, 31, 63, 127, 255, (....)
Options- A. 513
- B. 511
- C. 517
- D. 523 Discuss
- 8. 356 x 936 - 356 x 836 =?
Options- A. 35600
- B. 34500
- C. 49630
- D. 93600 Discuss
- 9. In a right angled ? ABC, Right angled at A, AD ? BC. Then :
Options- A. AD2 = BD × CD
- B. AD2 = AB × AC
- C. AD2 = BD × AB
- D. AD2 = CD × AC Discuss
- 10. By how much is 30% of 80 greater than 4/5 th of 25?
Options- A. 2
- B. 4
- C. 10
- D. 15 Discuss
More questions
Correct Answer: 160
Explanation:
Given M1 = 10
D1 = 8, M2= ? and D2 = 1/2
From M1 D1 = M2 D2
? 10 x 8 = M2 x 1/2
? M2= 10 x 8 x 2
? M2 = 160
Correct Answer: 2 days
Explanation:
Work completed by A + B in one day = 1/6 + 1/3 = 1/2
? Time taken by A + B to complete the work = 2 days.
Correct Answer: 256
Explanation:
(?)1/2 = (5568 ÷ 87)1/3 + (72 x 2)1/2
= (64)1/3 + (144)1/2
? ? = (4 + 12)2 = 256
Correct Answer: .45
Explanation:
Given Expression = ( .803 x .647 + .803 x .353 )
= 803 x (.647 + .353)
= .803 x 1
= .803
Correct Answer: 60 years
Explanation:
? Anup's age = (5 - 2) years = 3 years
Let Randheer's age be x years.
Then, (x - 6)/18 = 3
? x = 54 + 6 = 60
Correct Answer: 11 yr
Explanation:
? Total age of father and mother = 35 x 2 = 70 yr
and total age of father, mother and son = 27 x 3 = 81 yr
&there4: Age of son = 81 -70 = 11 yr
Correct Answer: 511
Explanation:
So, the next number is (255 x 2) + 1 = 511.
Correct Answer: 35600
Explanation:
356 x 936 - 356 x 836 = 356 x (936 - 836 )
= 356 x 100
= 35600.
Correct Answer: AD2 = BD × CD
Explanation:
Correct Answer: 4
Explanation:
It is (30 x 80)/100 - (4 x 25)/ 5 = 24 - 20 = 4
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