Questions

TRUE-FLASE [1 Marks Each]

Take a timed test

8 questions · self-marked practice — reveal the answer and mark yourself.

Question 11 Mark
The sum of two square numbers is a square number.
Answer
False.
Solution:
1 is the square of a number (1 = 12). But  1 + 1 = 2, which is not the square of any number.
View full question & answer
Question 21 Mark
The square of a prime number is prime.
Answer
False.
Solution:
If p is a prime number, its square is p2, which has at least three factors, 1, p and p2. Since it has more than two factors, it is not a prime number.
View full question & answer
Question 31 Mark
There is no square number between 50 and 60.
Answer
True.
Solution:
72 = 49 and 82 = 64. 7 and 8 are consecutive numbers and hence there are no square numbers between 50 and 60.
View full question & answer
Question 41 Mark
There are fourteen square number upto 200.
Answer
True.
Solution:
142 is equal to 196, which is below 200. There are 14 square numbers below 200.
View full question & answer
Question 51 Mark
The product of two square numbers is a square number.
Answer
True.
Solution:
If a2 and b2 are two squares, their product is a2 × b2 = (a × b)2, which is a square.
View full question & answer
Question 61 Mark
The number of digits in a square number is even.
Answer
False.
Solution:
100 is the square of a number but its number of digits is three, which is not an even number.
View full question & answer
Question 71 Mark
The difference of two square numbers is a square number.
Answer
False.
Solution:
4 and 1 are squares (4 = 22, 1 = 12). But 4 - 1 = 3, which is not the square of any number.
View full question & answer
Question 81 Mark
No square number is negative.
Answer
True.
Solution:
The square of a negative number will be positive because negative times negative is positive.
View full question & answer
TRUE-FLASE [1 Marks Each] - MATHS STD 8 Questions - Vidyadip