YOU DO NOT NEED TO Know that the oldest girl plays the piano. The combination of ages can be 3,3,4 or 2,3,6 or 2,2,9. It had been a long time since he had seen the prof so 2,2,9 may be out. And it is out along with along with 2,3,6 as these integers 2+2+9 = 13 and 2+3+6 = 11, while 3+3+4 = 10. One of these sums is even and two are odd so the house on the other side of the street must be number 10 and the girls are 3, 3, and 4. You do not need the piano player info and you did not exclude twins.
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Thanks, honey. :-)
YOU DO NOT NEED TO Know that the oldest girl plays the piano. The combination of ages can be 3,3,4 or 2,3,6 or 2,2,9. It had been a long time since he had seen the prof so 2,2,9 may be out. And it is out along with along with 2,3,6 as these integers 2+2+9 = 13 and 2+3+6 = 11, while 3+3+4 = 10. One of these sums is even and two are odd so the house on the other side of the street must be number 10 and the girls are 3, 3, and 4. You do not need the piano player info and you did not exclude twins.
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