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  1. Chapter 2 Class 6 Whole Numbers
  2. Serial order wise
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Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (a) Zero is the smallest natural number. False Natural numbers start from 1 1, 2, 3, 4, 5, 6, .. are natural numbers So, 1 is Smallest Natural Number Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (b) 400 is the predecessor of 399. False Predecessor of 399 = 399 − 1 = 398 398 is the predecessor of 399 Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (c) Zero is the smallest whole number. True Whole numbers start from 0 0, 1, 2, 3, 4, 5, 6 are whole numbers So, 0 is the smallest Whole Number Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (d) 600 is the successor of 599. Successor of 599 = 599 + 1 = 600 600 is the successor of 599 So, True Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (e) All natural numbers are whole numbers. Natural numbers are 1, 2, 3, 4, 5, 6, …. Whole numbers are 0, 1, 2, 3, 4, 5, 6, …. Since 1, 2, 3, 4, 5, 6, …. is in whole number ∴ All natural numbers are whole numbers True Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (f ) All whole numbers are natural numbers. Whole numbers are 0, 1, 2, 3, 4, 5, 6, …. Natural numbers are 1, 2, 3, 4, 5, 6, …. Since 0 is not a natural number ∴ All whole numbers are not natural numbers False Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (g) The predecessor of a two digit number is never a single digit number. Predecessor of 10 = 10 − 1 = 9 Since Predecessor of 10 is 9 which is a one-digit number. So, False Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (h) 1 is the smallest whole number. False Whole numbers are 0, 1, 2, 3, 4, 5, 6, …. So, smallest whole number is 0 Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (i) The natural number 1 has no predecessor. Predecessor of 1 = 1 − 1 = 0 But 0 is not a natural number So, Natural number 1 has no predecessor True Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (j) The whole number 1 has no predecessor. Predecessor of 1 = 1 − 1 = 0 And 0 is a whole number So, Whole number 1 has predecessor 0 False Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (k) The whole number 13 lies between 11 and 12. Whole numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, …. So, 13 lies after 11 & 12 False Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (l) The whole number 0 has no predecessor. Predecessor of 0 = 0 − 1 = –1 But –1 is not a whole number So, 0 has no predecessor. True Ex 2.1, 8 Which of the following statements are true (T) and which are false (F) ? (m) The successor of a two digit number is always a two digit number. Successor of 99 = 99 + 1 = 100 So, successor of two digit number can be a 3 digit number False

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