Answer Key 1.7
- Solutions:
- 6 − 4 ≠ 4
- 5 + 4 = 9
- 0 + 4 = 4
- 8 − 4 = 4
 
- Are the following statements true?
- Letters A, B, C & D do not appear anywhere in the spellings of 1 to 99.
 True — but also J, K, L, P, Q & Z.
- Letter D appears for the first time in “hundred.”
 True.
- Letters A, B & C do not appear anywhere in the spellings of 1 to 999.
 True.
- Letter A appears for the first time in “thousand.”
 True.
- Letters B & C do not appear anywhere in the spellings of 1 to 999 999 999.
 True.
- Letter B appears for the first time in “billion.”
 True.
- Letter C does not appear anywhere in any word used to count in English.
 False.
 
- Letters A, B, C & D do not appear anywhere in the spellings of 1 to 99.
