Practice Question and Answer
8 Q: The price of one eraser is Rs. 3. The value of 20 eraser is equal to the value of three Pens. The value of one pen is equal to the value of two pencils and the value of six pencils is equal to the value of five markers. What is the value of one marker?
2280 05f6d8b88ec13dd748003b650
5f6d8b88ec13dd748003b650- 1Rs. 9false
- 2Rs. 12true
- 3Rs. 13.50false
- 4Rs. 15false
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Answer : 2. "Rs. 12"
Q: The average age of 7 boys is increased by 1 year when one of tem whose age is replaced by a girl. What is the age of the girl ? 2280 05b5cc6cae4d2b4197774e086
5b5cc6cae4d2b4197774e086- 133 yrsfalse
- 227 yrsfalse
- 321 yrsfalse
- 429 yrstrue
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Answer : 4. "29 yrs"
Explanation :
Answer: D) 29 yrs Explanation: Let the avg age of 7 boys be 'p' yearsLet the age of the girl be 'q' yearsFrom given data,The age of 7 boys = 7p yearsNow the new average = (p + 1) when 22 yrs is replaced by qNow the age of all 7 will become = 7(p + 1) yrsHence, 7p - 22 + q = 7(p + 1) yrs7p - 22 + q = 7p + 7q = 22 + 7 = 29 Therefore, the age of girl = q = 29 years.
Q: The highway transportation system is coordinated by 2280 05b5cc669e4d2b4197774bf72
5b5cc669e4d2b4197774bf72- 1Department of Transportationtrue
- 2Your local police departmentfalse
- 3The Department of Educationfalse
- 4The Internal Revenue Servicefalse
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Answer : 1. "Department of Transportation"
Explanation :
Answer: A) Department of Transportation Explanation:
Q: Given set
12, 20, 28
2280 05f100362c06d532785e27167
5f100362c06d532785e2716712, 20, 28
- 118, 30, 42true
- 27, 14, 28false
- 33, 15, 18false
- 418, 27, 72false
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Answer : 1. "18, 30, 42 "
Q: what is the gram formula mass of NH43PO4? 2280 05b5cc670e4d2b4197774c039
5b5cc670e4d2b4197774c039- 1139.54false
- 2140.70false
- 3149.08true
- 4153.24false
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Answer : 3. "149.08"
Explanation :
Answer: C) 149.08 Explanation: The gram formula mass is nothing but molar mass. Composition : Symbol Element Atomic weight Atoms P Phosphorus 30.973762 1 = 30.973 O Oxygen 15.9994 4 = 63.998 N Nitrogen 14.0067 3 = 42.020 H Hydrogen 1.00794 12 = 12.096 Total = 30.973+63.998+42.020+12.096 = 149.087
Q: Find the odd one in the given series ? 5-20-25, 10-40-50, 4-15-24, 25-100-125 2280 05b5cc6dde4d2b4197774e9ec
5b5cc6dde4d2b4197774e9ec- 14-15-24true
- 25-20-25false
- 310-40-50false
- 425-100-125false
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Answer : 1. "4-15-24"
Explanation :
Answer: A) 4-15-24 Explanation: In each term second two numbers are multiples of the first number. But in 4-15-24 15 is not multiple of 4.
Q: Subjects, there were 9 boys and some girls. In a test, the mean score obtained by the boys was 13 while that obtained by the girls was 15. If the overall average was 14.28, what was the total number of students in the class?
2280 05dc118bcb0e9c27a7e27c0d7
5dc118bcb0e9c27a7e27c0d7- 124false
- 226false
- 327false
- 425true
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Answer : 4. "25"
Q:The following line graph gives the percentage of the number of candidates who qualified an examination out of the total number of candidates who appeared for the examination over a period of seven years from 1994 to 2000.
The difference between the percentage of candidates qualified to appeared was maximum in which of the following pairs of years?
2280 05e7998fd8560ba13b02734cd
5e7998fd8560ba13b02734cd- 11994 and 1995false
- 21997 and 1998true
- 31998 and 1999false
- 41999 and 2000false
- 5None of thesefalse
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