Teachoo MCQ Test

10 Question MCQ (including Assertion)

Preparing for CBSE

Chapter 6 Class 7 - Number Play - Ganita Prakash | 10 questions

Timed test. Answer every question before time runs out. Correct answers and solutions appear after submission.
Time remaining 960
Question 1 of 10
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Question 1 of 10
Assertion (A): A normal \(3 \times3\) magic square using 1 to 9 has centre 5.
Reason (R): Opposite entries total 10, so every line through the centre totals \(10+5=15\).
Magic-square questionA 3 by 3 magic square in which every row, column and diagonal has the same sum.8163?7492
Question marks hide only the entries required by the problem.
Select one option. Answers are shown after the test.
Question 2 of 10
Assertion (A): The eighth Virahanka number is 34.
Reason (R): Each term is the sum of the two preceding terms.
Select one option. Answers are shown after the test.
Question 3 of 10
Assertion (A): Adding 2 to every entry of a magic square with sum 15 produces magic sum 21.
Reason (R): The centre of a normal 1-to-9 magic square is 5.
Select one option. Answers are shown after the test.
Question 4 of 10
Assertion (A): The expression \(4m-1\) is odd for every integer \(m\).
Reason (R): The product \(4m\) is odd.
Select one option. Answers are shown after the test.
Question 5 of 10
Assertion (A): Any person who calls 0 must be the tallest in the whole line.
Reason (R): A call of 0 only says that nobody before that person is taller.
Height-call arrangementPeople stand from left to right; their drawn heights determine how many taller people stand before each person.01?234
Each badge counts taller people standing to that person's left.
Select one option. Answers are shown after the test.
Question 6 of 10
Assertion (A): The sum \(1+2+\cdots+75\) is even.
Reason (R): Among 1 to 75 there are 37 odd numbers.
Select one option. Answers are shown after the test.
Question 7 of 10
Assertion (A): In every arrangement of 1 to 9 in a \(3\times3\) grid, the three row sums total 45.
Reason (R): The number 45 is odd.
Row-and-column sum gridA number grid with circled sums for each row and column.47561239816920131715
Use the circled totals attached to the relevant row or column.
Select one option. Answers are shown after the test.
Question 8 of 10
Assertion (A): The 20th Virahanka term is even.
Reason (R): The position number 20 is even.
Select one option. Answers are shown after the test.
Question 9 of 10
Assertion (A): The Virahanka term immediately before 987 is 610.
Reason (R): Subtracting gives \(1597-987=377\).
Virahanka sequence questionSuccessive Virahanka terms are shown in boxes with one required value.??98715972584
Each new term comes from the two boxes immediately before it.
Select one option. Answers are shown after the test.
Question 10 of 10
Assertion (A): The 100th odd number is 199.
Reason (R): The sum of two odd numbers is even.
Select one option. Answers are shown after the test.