Math MCQs with answers Page - 17

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Q. Aakar moves with a speed of 80 km/h what is the speed of car in metres/ second?

  • (A) 200/9 m/s
  • (B) 8 m/s
  • (C) 181/9 m/s
  • (D) None of above

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Q. A copper wire when bent in the form of a square encloses an area of 121 cm². if the same wire is bent in the form of a circle then the area of the circle is?

  • (A) 121 cm²
  • (B) 242 cm²
  • (C) 154 cm²
  • (D) 60 cm²

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Q. A Shopkeeper purchased a chair marked at Rs.800 at two successive discounts of 10% and 15%, respectively. He spent Rs.28 on transportation and sold the chair for Rs.800 his gain per cent is

  • (A) 40
  • (B) 15
  • (C) 25
  • (D) 30

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Q. The product of the LCM and HCF of two numbers is 24. The difference of the two numbers is 2. The numbers are

  • (A) 8 and 6
  • (B) 6 and 4
  • (C) 2 and 4
  • (D) 8 and 10

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Q. Points A and B are 70 km apart on a highway. A car starts from A and another car starts from B at the same time. If they travel in the same direction they meet in 7 h but if they travel towards each other they meet in 1 h. What are the speeds of the cars?

  • (A) 40 km/h, 40 km/h
  • (B) 40 km/h, 30 km/h
  • (C) 30 km/h, 30 km/h
  • (D) None of above

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Q. 4 men and 6 women can complete a work in 8 days. While 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it ?

  • (A) 45
  • (B) 35
  • (C) 50
  • (D) 40

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Q. Average age of 6 sons of a family is 8 year. Average age of sons together with their parents is 22 year. If the father is older than the mother by 8 year, the age of mother (in yr) is

  • (A) 44
  • (B) 68
  • (C) 60
  • (D) 52

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Q. A, B and C started a business with their investment in the ratio their investment in the ratio 1 : 3 : 5. After 4 months, A Invested the same amount as before and B as well as C withdraw half of their profits at the end of the year was

  • (A) 5 : 6 : 10
  • (B) 4 : 3 : 5
  • (C) 10 : 5 : 6
  • (D) 6 : 5 : 10

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Q. Two pipes A and B can separately fill a cistern in 60 min and 75 min pipe at the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, the cistern is full in 50 min. In how much time can the third pipe alone empty the cistern ?

  • (A) 110 min
  • (B) 90 min
  • (C) 120 min
  • (D) 100 min

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Q. A cylindrical tube open at both ends is made of metal. The internal diameter of the tube is 11.2 cm and its length is 21 cm. The metal everywhere is 0.4 cm trick. The volume of the metal (take π = 22/7) is

  • (A) 316 cm³
  • (B) 306.24 cm³
  • (C) 280.52 cm³
  • (D) 310 cm³

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