Real numbers

Classify the Number: -23

• Rational
• Real, rational, integer
• integer
• Real, irrational, whole

The fundamental theorem of arithmetic states about _________

• Prime numbers

• Composite numbers

• Co-prime numbers

• None of the above

Which of the following is not irrational?

• $\pi$

• $\frac{22}{7}$

• $\sqrt{0.4}$

• 16.425871236....

Rational numbers are denoted by

• N

• W

• Z

• Q

Which of the following are coprimes

• 4,6

• 8,9

• 5,10

• 10,12

H.C.F. of any two prime numbers is____

Express 98 as a product of its primes

• (a) 2² × 7

• (b) 2² × 7²

• (c) 2 × 7²

• (d) 23 × 7

According to the Fundamental Theorem of Arithmetic, if p (a prime number) divides b² and b is positive, then _________.

• (a) b divides p

• (b) b² divides p

• (c) p² divides b²

• (d) p divides b

Which of the following is rational?

• .211232112421125. . . .
• π
• √25
• √12

• Rational, Integer
• Whole, Integer, Rational 
• Irrational, Integer
• Irrational