Lakshya Education MCQs

Question:  eight consecutive numbers are given. if the average of the two number that appear in the middle is 6 then the sum of the eight given numbers is
Options:
A.36
B.48
C.52
D.67
Answer: Option B
Explanation :

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More Questions on This Topic :

Question 1.  calculate the average of the cubes of first five natural numbers.
  1.    45
  2.    25
  3.    35
  4.    55
Answer: Option A
Explanation :
Question 2.  the average height of 40 student is 163 cm. on a particular day, three student a, b, c were absent and the average of the remaining 37 student was found to be 162 cm. if a, b have equal height and the
  1.    165 cm
  2.    168 cm
  3.    173 cm
  4.    176 cm
Answer: Option D
Explanation :
Question 3.  the average marks obtained by 120 candidates in a examination 35. if the average marks of passed candidate is 39 and that of the failed candidates is 15,what is the number of candidates who passed?
  1.    100
  2.    150
  3.    200
  4.    250
Answer: Option A
Explanation :
Question 4.  the average of 25 results is 18, that of first twelve is 14 and of last twelve is 17 . thirteenth result is?
  1.    75
  2.    78
  3.    79
  4.    82
Answer: Option B
Explanation :
Question 5.  on a journey across delhi, a taxi average 30 kmph for 60% of the distance, 20 kmph for 20% of it and 10 kmph for the remainder, the average speed for the whole journey is ?
  1.    5 km/hr
  2.    10 km/hr
  3.    15km/hr
  4.    20 km/hr
Answer: Option D
Explanation :
Question 6.  in a class, there are 80 students and their average marks in the annual examination are 40. if the average marks of passed students are 60 and average marks of failed students are 35, then find out th
  1.    43
  2.    58
  3.    64
  4.    71
Answer: Option C
Explanation :

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