Question

7.
Statement (A): odd x odd x odd ...(20 times) is odd.
Statement (B): even + odd + even +...+ odd (20 times) is even.
b) Both A and B are false
c) A is true and B is false
d) A is false and B is true
a) Both A and B are true
8.
Statement (A): The square of 31 is not a prime number.
Statement (B): The square of a prime number is prime.
a) Both A and B are true
b) Both A and B are false
A is true and B is false
d) A is false and B is true​

Answer 1

Answer:

7.c)A is true and B is false

8.c)A is true and B is false

Step-by-step explanation:

7. Statement (A) : odd×odd×odd×(20times) =odd

Examples : 3×3×3×3........ = We get a odd number

Statement (B) : even+odd+even+odd+(20times)=odd

8.square of 31 is 961 . 961 is a composite number i.e, not a prime number. So statement A is true.

Statement (B) : The square of a prime number is a composite.

Example : 3×3=9

9 is a composite number.

2×2= 4

4 is a composite number

Therefore Statement (B) is false.