The sum of numbers from 1 to 10 is 55. The average is the sum divided by the count: 55/10 =5.5
87. Average of the first 3 odd prime numbers is
(A) 3
(B) 5
(C) 7
(D) 9
Answer:
(B) 5
Explanation:
The first three prime numbers are 3, 5, and 7. Their sum is 15 The average is 15/3 = 5
88. Find the average of the first 5 natural numbers.
(A) 3
(B) 5
(C) 7
(D) 11
Answer:
(A) 3
Explanation:
The first 5 natural numbers are 1, 2, 3, 4, 5. Their sum is 15. The Average is 15/5=3
89. Find the average of the first 5 prime numbers
(A) 5
(B) 5.6
(C) 4
(D) 4.5
Answer:
(B) 5.6
Explanation:
The first 5 prime numbers are 2, 3, 5, 7, and 11. Their sum is 28 The average is 28/5=5.6
90. The average of 2kg, 200g, and 500g is
(A) 234 g
(B) 600 g
(C) 700 g
(D) 900 g
Answer:
(D) 900 g
Explanation:
Note: Mathematically, . The sum is 2700. The average is 2700/3=900 , which corresponds to option D. However, the official JMI answer key erroneously marks option A (234 g) as the correct answer for this question).
