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16-01-2022 Answers

 1. Ajay and Manoj start in bike at the same time from their homes which are 45 kms apart. If one moves west at 50 kmph and the other moves east at 40 kmph, what will be the distance between them after 2 hours? Answer: 225 kms Solution: Initial distance = 45 km As they are moving in two opposite directions so relative speed = 50 + 40 = 90 kmph. Distance between them after 2 hours = 45 +(90*2) = 225 kms. 2. Krish is the brother-in-law of Kamini. Kirmani is the father of Kishore. Kishore is the spouse of Kamini. How is Krish related to Kishore ? Answer: Brother Solution: "Brother in law" means "The brother of one's husband or wife". Spouse means "partner in a marriage" So Krish is the brother of Kishore. 3. Answer the four questions given below based on the information provided. Four sisters - Suvarna, Tara, Uma and Vibha are playing a game where the loser doubles the money of each of the other players from her share. They played four games and each of t...
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31-07-2021 Answers

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 1. (REF=25847) : MN is a mid-segment of triangle ABC. If MN is 48 cm, what is the length of BC? Answer: 96 cm Solution: As MN is mid-segment, BC = 2*MN = 2*48 = 96 cm 2. (REF=25846) : Find the largest angle in the triangle given below. Answer: MAR Solution: The angle opposite to the largest side is the largest angle in a triangle. The largest side is MR (or RM) which is 62 m. Hence the angle opposite to it MAR (or RAM) is the largest angle 3. (REF=25853) : ABC is a right triangle. AM is perpendicular to BC. The size of angle ABC is equal to 55 degrees. Find the size of angle MAC. Answer: 55 degrees Solution: As ABC=55 degree, MCA = 180 - (90+55) = 35 degrees. MAC = 180 - (AMC+MCA) = 180 - (90+35) = 55 degrees 4. (REF=25862) : The vertices of the inscribed (inside) square bisect the sides of the second (outside) square. Find the ratio of the area of the outside square to the area of the inscribed square. Answer: 2:1 Solution: Let the side of the outside square be a. Area of the out...
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05-09-2021 Answers

 1. In a class 52% of the students are girls of which 25% are interested in tennis. What is the probability that a randomly selected student from the class is a girl who is interested in tennis? Answer: 13/100 Solution: Assume 100 students are in the class. Num of girls = 52 Girls interested in tennis = 52 * 25/100 = 13 Reqd probability = 13/100 2. On a highway, the probability of seeing an ambulance during a twenty-minutes period is 11/36. What is the probability of not seeing an ambulance in a ten-minutes period? Answer: 5/6 Solution: Probability of not seeing an ambulance in 20 mins period = 1 - 11/36 = 25/36 Probability of not seeing a lorry in 10 mins period = Square root of 25/36 = 5/6 3. Find the probability that 2 men selected at random were born in the same month. Answer: 1/12 Solution: The first person can be born in any of the 12 months. The second person also being born in the same month = 1/12. 4. Four boys and three girls stand in queue for an interview. The probabili...
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