Question
The average of five even numbers is 74. If we replace
two of these even numbers, 84 and 96, with a single even number X, the new average decreases by 4. What is the value of X?Solution
Sum of 5 even numbers = 5 x 74 = 370 Sum of after 2 replacing even numbers by X = 370 - (84 + 96) + X = 370 - 180 + X Now Sum of 4 even numbers = (74 - 4) x 4 = 280 According the question, we get 370 – 180 + X = 280 X = 280 – 370 + 180 X = 90
The extent to which a test measures what it purports to measure is called _______.
Which subjects are allocated to the Department of Higher Education?
The major disadvantage of punishment in education is that ___________
What is the purpose of the assignments in the text book?
Which of the following situations would the best for maximum transfer of learning?
Which of the following is Doordarshan's Educational Television Channel?
Which of the following is true about the ways of learning for students?
When was the National Adult Education Programme (NAEP) launched?
Assertion (A): State board examinations are not conducted simultaneously across India.
Reason (R): Different states have varying syllabi and exam...
Choice of a vocation depends ___________
Relevant for Exams:
