39. If each letter in the following calculation represents a single digit from 1 to 9, find the
value of the letters and verify your answer.
(4 marks
CD
x D
119
Answers
Answered by
1
Answer:
D is 7 and C is 1.
17x7 = 119 verified.
Step-by-step explanation:
In order to get 9 at the units digit, D can be either 3 or 7.
Now the remaining digits, that is 11 tells us that D cannot be 3, as because 11 is not fully divisible by 3.
Therefore, D is 7. And we have a carry of 4 to add with the product of D and C to match 11. Therefore, C must be 1.
Let's verify:
17x7 = 119 verified.
Answered by
4
Answer:
here,
D is 7
C is 1
Therefore,
CD × D = 119
SO,
17 × 7 = 119..
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