Lakshya Education MCQs

Question:  the average age of 24 students in a class is 10. if the teacher’s age is included, the average increase by one . the age of the teacher is ?
Options:
A.15 years
B.25 years
C.35 years
D.45 years
Answer: Option C
Explanation :

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Question 1.  average monthly income of a family of 4 earning members was rs. 735. one of the earning members died and therefore, the average income came down to rs 650. the income of the deceased was?
  1.    Rs. 210
  2.    Rs. 430
  3.    Rs. 750
  4.    Rs. 990
Answer: Option D
Explanation :
Question 2.  the average expenditure of a man for the first five month is rs. 120 and for the next seven months it is rs . 130. if he saves rs 299 in that year, his monthly average income is ?
  1.    Rs. 110
  2.    Rs. 150
  3.    Rs. 170
  4.    Rs. 230
Answer: Option B
Explanation :
Question 3.  the average expenditure of a man for the first five month is rs. 120 and for the next seven months it is rs . 130. if he saves rs 299 in that year, his monthly average income is ?
  1.    Rs. 110
  2.    Rs. 150
  3.    Rs. 170
  4.    Rs. 230
Answer: Option B
Explanation :
Question 4.  the average age of 24 students in a class is 10. if the teacher’s age is included, the average increase by one . the age of the teacher is ?
  1.    15 years
  2.    25 years
  3.    35 years
  4.    45 years
Answer: Option C
Explanation :
Question 5.  if a, b, c, d, e are five consecutive odd number , their average is ?
  1.    (a+4)
  2.    5(a+4)
  3.    (a+4)/5
  4.    (a+5)/4
Answer: Option A
Explanation :
Question 6.  the average of 8 number 21. if each of the number is multiplied by 8,the new set of number is ?
  1.    148
  2.    158
  3.    168
  4.    178
Answer: Option C
Explanation :

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