course Mth 151
1.1 3. Deductive
5. Inductive
6. Deductive
9. Deductive
10. Inductive
12. Deductive
15. 21
18. 1
21. 11/12
24. 56
25. -7
27. 5
30. 1,-2, 3,-4, 5,-6, 7,-8
33. 33334*33334=1,111,155,556
36. 11111*11111=12354321
39. 5 (6) + 5 (36) + 5 (216) + 5 (1296) + 5 (7776) = 6 (7776-1)
40. 3 + 9 +27 + 81 + 243 = 3(234-1)/1
42. 1/1*2 + 1/2*3 + 1/3*4 + 1/4 *5 + 1/5*6 = 5/6
45. 320,400
48. Just take any odd number and add one. See how many pair of numbers add up to the original odd number then take the total pair number times it by the odd number plus one.
50. 101000
51. Add red to the bottom right corner leaving only the bottom left corner white and the two middle blocks around the corners. Total of nine white blocks and 7 red blocks
54. T
55. 381 – 183 = 198 642 – 246 = 396
It took me a while to realize that 1 + 8 = 9 and 3 + 6 = 9 and both middle digits are 9. No matter what the digits are when you reverse and subtract your middle digit will be 9 and the 1st and 3rd added will be 9.
57. All the answers have the same digits, but the just rotate. But when you times it by 7 you get only 9.
60. This doesn’t work!! I got my age down but it keeps saying I have change which I don’t.
You included some explanations here, and you appear to have good understanding. However if you were submitting the open query I would have an even clearer idea what you are doing.
In any case you seem to be doing pretty well.