Find the greatest 4-digit number which is divisible by both 4 and 7 . That number is ..........
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bai nay dich ra la tim so lon nhat co 2 chu so chia het cho 2,3va 4
so do la 96
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Lesson 1 : Answer
Two consecutive number less than 1 unit each
Large number is:
(149-1) : 2 = 75
Lesson 2 :
Among them is : 9996
Because: 9996:4=2499
9996:7=1428
Lesson 3: Answer
After two people get sick of people remaining:
6-2=4(people)
The ratio between 4 and 6 people is:
4:6= 2/3
Time to gather the rest of the eggs:
2:2/3=3(hours)
Nhớ **** cho mình nhé!!!
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Nếu B là không chia hết cho 24 và B là số 5 chữ số lớn nhất mà tổng của tất cả các chữ số là 21 thì B = ...........
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Call the smallest digit a => 3-digit number a, 2a, 3a with 3a ≤ 9 => a ≤ 3. Find the number divisible by 18, which is divisible by 9, so (a + 2a + 3a) = 6a is divisible by 9 => a is divisible by 3, so a = 3 => 3 digits are 3, 6, 9
The number to find is even by dividing by 2, so the last digit is 6
=> 396 or 936
Call the smallest digit a => 3-digit number a, 2a, 3a with 3a ≤ 9 => a ≤ 3. Find the number divisible by 18, which is divisible by 9, so (a + 2a + 3a) = 6a is divisible by 9 => a is divisible by 3, so a = 3 => 3 digits are 3, 6, 9
The number to find is even by dividing by 2, so the last digit is 6
=> 396 or 936
Number is : 9996
Good luck!