FC-CBSE-10-M-C1

Product of three numbers is equal to the product of their HCF and LCM

• True

• False

• Only if the numbers are prime

• Only for two numbers

Prime numbers have more than two factors

True or false

• True

• False

• They have three factors

• They have only one factor

• 1

• 2

• 3

• 4

1 is both a Prime and a Composite Number

• True

• False

• 1 is only a Prime Number

• 1 is only a Composite Number

• @@2^2\times3^2\times5^2\times7@@

• @@6300@@

• @@3150@@

• @@1260@@

• @@a \times b@@

• @@a + b@@

• @@a - b@@

• @@\frac{a}{b}@@

The product of two irrational numbers can never be a rational number.

• True

• False

• Sometimes

• Only if one is zero

• 2

• 3

• 4

• 5

HCF of any two co-prime numbers is always 1. True or false?

• True

• False

• Sometimes true

• Always false

If 'p' is a prime number and p divides a², then p divides 'a' also, where a is positive integer. True or false?

• True

• False

• It depends on the value of 'a'

• Only if 'p' is an odd prime