Consider this option (this is not the only way):
1. according to the condition 2345N is divisible by <em>6</em>, it means, that N is even number (0;2;4;6 or 8).
2. <em>6</em>=3*2, then the number 2345N is divisible by 3 also. It means, that the number (2+3+4+5+N)=(14+N) is divisible by 3, where N={0|2|4|6|8}.
3. using items 1 and 2:
(14+4)=18; only 18 is divided by 3, it means that N=4.
answer: 4.
Note also, that only 23451; 23454 and 23457 are divided by 3. Only 2345<u>4</u> is divided by 6 (2345<u>4</u>/6=3909).
90
-12. The newsstand had 90 copies at the beginning of the day
===
78
Answer:
5:17
Step-by-step explanation:
there are 17 total marbles and 5 that are green. The part is 5 and the whole is 17.
It is the second one 2a +b over 4
The question 6 is 2,150 meters question 7 is length 10w+64 meters
Width 25w+49 meters
