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The world's youngest parents were 8 and ...

The world's youngest parents were 8 and 9 years old, who lived in

A

Sourth africa

B

China

C

France

D

Canada

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The correct Answer is:
B
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One day I asked the son of my close friend about his age. The child replied in a different way. He said: "One year ago my dad was 8 times as old as me, and now his age (in years) is equal to the square of my age." Represent the above situation by a quadratic equation.

If 2 is added to numerator and denoinator to a fraction, it becomes 9/10 . If 3 is subtracted from numerator and denominator , the fraction becomes 4/5 . Find the fraction. OR A girl is twice as old as her sister. Four years, hence the product of their ages ( in years) will be 160. Find their present ages.

A company manufactures car batteries of a particular type. The lives (in years) of 40 such batteries were recorded as follows : {:(2.6,3.0,3.7,3.2,2.2,4.1,3.5,4.5,3.5,2.3,3.2),(3.4,3.8,3.2,4.6,3.7,2.5,4.4,3.4,3.3,2.9,3.0),(4.3,2.8,3.5,3.2,3.9,3.2,3.2,3.1,3.7,3.4,4.6),(3.8,3.2,2.6,3.5,4.2,2.9,3.6,,,,):} Construct a grouped frequency distribution table for this data, using class intervals of size 0.5 starting form the intervals 2-2.5

Thirty children were asked about the number of hours they watched TV programmes in the previous week.The results were found as follows : {:(1",",6",",2",",3",",5",",12",",5",",8",",4",",8),(10",",3",",4",",12",",2",",8",",15",",1",",17",",6),(3",",2",",8",",5",",9",",6",",8",",7",",14",",12):} (i) Make a grouped frequency distribution table for this data 5 and one of the class intervals as 5-10. (ii) How many children watched television for 15 or more hours a weak ?

In a survey of 60 people, it was found that 25 people read newspaper H, 26 read newspaper T, 26 read newspaper I, 9 read both H and I, 11 read both H and T, 8 read both T and I, 3 read all three newspapers. Find: the number of people who read exactly one newspaper.

TRUEMAN BIOLOGY-REPRODUCTIVE HEALTH-Multiple Choice Questions
  1. India's fist test tube baby was born in august 6, 1986 in mumbai. The ...

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  2. The fusion of ovum and pserrm is done outside the body of woman to for...

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  3. The world's youngest parents were 8 and 9 years old, who lived in

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  4. Which of the following is antisterility vitamin?

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  5. Boldness is related to

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  6. Which of the following hormones helps to attain sexual maturity?

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  7. On what factors the population of a species depends ?

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  8. Chancroid is caused by

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  9. Which one is not included in "barrier methods" of birth control?

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  10. Infertility is the relative state of failure to conceive after how man...

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  11. A sexually transmitted disease symptomised by the development of chanc...

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  12. Which of these is used to control human population?

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  13. Which of the following is the component of oral pills?

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  14. If in a population, natality is balanced by mortality, then there will...

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  15. Saheli' an oral contraceptive for females was developed by

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  16. Deficiency of which of the following elements causes infertility?

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  17. NACO (National AIDS control organisation) was established in

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  18. In vitro fertilisation is a technique that involves transfer of which ...

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  19. Cu ions released from copper-releasing intra uterine devices (IUDs)

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  20. A logistic growth curve depicting a population that is limited by a de...

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