Number Play Class 7 Fill in the Blanks
hardNumber Play Class 7 Fill in the Blanks
Number Play Class 7 Fill in the Blanks
Question 1.
The sum of any two odd numbers is an _________ number.
Solution:
even
Question 2.
The 5th term of the Virahanka sequence is the number ________.
Solution:
8
Question 3.
If A + A + A = BA, then the values of A and B are _______ and _______ respectively.
Solution:
5, 1
Question 4.
In a 3 × 3 magic square constructed using the numbers from 1 to 9, the magic sum is ________.
Solution:
15
Question 5.
The sum of any two consecutive numbers is _________.
Solution:
odd
Number Play Class 7 True or False
Question 1.
Parity of the 9th term of the Virahanka sequence is odd.
Solution:
True
Question 2.
4n + 3 always gives an even number.
Solution:
False
Question 3.
The 5th term of the Virahanka sequence is an odd number.
Solution:
False
Question 4.
The magic sum of a 3 × 3 magic square made up of any 9 consecutive numbers is always an odd number.
Solution:
False
Question 5.
The parity of the product of 6th and 7th term of the Virahanka sequence is odd.
Solution:
True
Number Play Class 7 Match the following
Match column I with column II for 3 × 3 magic squares of 9 consecutive numbers:
| Column I (Magic sum) | Column II (Number at the centre) |
| (i) 18 | (a) 9 |
| (ii) 27 | (b) 12 |
| (iii) 15 | (c) 6 |
| (iv) 48 | (d) 5 |
| (v) 36 | (e) 16 |
Solution:
| Column I (Magic sum) | Column II (Number at the centre) |
| (i) 18 | (c) 6 |
| (ii) 27 | (a) 9 |
| (iii) 15 | (d) 5 |
| (iv) 48 | (e) 16 |
| (v) 36 | (b) 12 |