Lakshya Education MCQs

Question:  the average of four positive integers is 69. the highest integer is 93 and the least integer is 39. the difference between the remaining two integers is 28. which of the following integers is the high
Options:
A.58
B.86
C.49
D.Cannot be determined
Answer: Option B
Explanation :

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Question 1.  the average height of 50 pupils in a class is 150 cm. five of them whose height is 146 cm, leave the class and five others whose average height is 156 cm, join. the new average height of the pupils of
  1.    149
  2.    151
  3.    152
  4.    153
Answer: Option B
Explanation :
Question 2.  rahim bought 65 books for rs.1150 from one shop and 50 books for rs.920 from another. what is the average price he paid per book ?
  1.    Rs.20
  2.    Rs.18
  3.    Rs.22
  4.    Rs.16
Answer: Option B
Explanation :
Question 3.  rahim bought 65 books for rs.1150 from one shop and 50 books for rs.920 from another. what is the average price he paid per book ?
  1.    Rs.20
  2.    Rs.18
  3.    Rs.22
  4.    Rs.16
Answer: Option B
Explanation :
Question 4.  the average height of 35 boys in a class was calculated as 180cm. it has later found that the height of one of the boys in the class was wrongly written as 166 cm whereas his actual height was 106 cm.
  1.    179.29 cm
  2.    178.29 cm
  3.    179.38 cm
  4.    178.39 cm
Answer: Option B
Explanation :
Question 5.  the average age of seven persons sitting in a row facing east is 28 years. if the average age of the first three persons is 21 years and the average age of the last three persons is 34 years, then fin
  1.    30 Years
  2.    31 years
  3.    26 years
  4.    33 years
Answer: Option B
Explanation :
Question 6.  the average age of seven persons sitting in a row facing east is 28 years. if the average age of the first three persons is 21 years and the average age of the last three persons is 34 years, then fin
  1.    30 Years
  2.    31 years
  3.    26 years
  4.    33 years
Answer: Option B
Explanation :

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