Question

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​

Answer 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.

Answer 2

Answer:

here,

D is 7

C is 1

Therefore,

CD × D = 119

SO,

17 × 7 = 119..