Question

Please answer these questions......

Answer 1

19) the numbers which are having more than two factors are called composite numbers. 20) smallest composite number two is 4 and smallest prime number is 2. Therefore, HCF(4,2) = 2. 21) true. 22) true. 23) false. 24) true. 25)true. 26) true. 27) false. 28) false. 29) for n= 0 ,5^m will end in 5. 30) if a and b are relatively prime numbers then their HCF will be 1. 31) if a and b are relatively prime numbers then their LCM will be the product of those two numbers. 32) false

Answer 2

Answer:

19. A composite number is a positive integer that can be formed by multiplying two small positive integers.

20. The HCF ofthe smallest composite number and the smallest prime number is 2.

21. The statement is TRUE.

22. The statement is TRUE.

23. The statement is FALSE.

24. The statement is TRUE.

25. The statement is TRUE.

26. The statement is FALSE.

27. The statement is FALSE.

28. The statement is FALSE.

29. The statement is FALSE.

30. Their HCF is 1.

31. Their LCM is ab.

32. The statement is FALSE.

Step-by-step explanation:

20. The smallest composite number is 4 and smallest prime number is 2. Hence, the HCF of 4 and 2 is 2.

24. Lets take 3, 4, 5. Then their product will be 60, which is divisible by 6.

26. Every odd integer is in the form of 2m +1, where m is an integer.

27. But sometimes it is rational and sometimes it is irrational. [(root3 × root3 =3), which is a rational number and (root3 × root2 = root6) , which is a irrational number. 28. But sometimes it is rational and sometimes it is irrational. [{(2 + root3) + (4 - root3)= 6}, which is a rational number and (root3 + root3 = 2root3), which is a irrational number.

29. Any number multiplied by 10 always ends in 0.

30. a = a × 1,

b = b × 1

then HCF = 1.

31. a = a × 1,

b = b × 1

then LCM = ab.

32. 350 as their LCM leaves 2 as a reminder.

Please go through the process and answer. Thank you.